Home / 26,431.10-36,439.63-20,998.20

Finding the Fourth Proportional to 26,431.10, 36,439.63 and 20,998.20

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Solution

The fourth proportional to 26,431.10, 36,439.63 and 20,998.20 is: 28,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.10 : 36,439.63 = 20,998.20 : x
  2. Step 2: Convert to fraction form
    26,431.10/36,439.63 = 20,998.20/x
  3. Step 3: Cross multiply
    26,431.10x = 36,439.63 × 20,998.20
  4. Step 4: Simplify right side
    26,431.10x = 765,166,635.96
  5. Step 5: Solve for x
    x = 765,166,635.96/26,431.10
  6. Step 6: Final answer
    x = 28,949.48

Related Problems

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Half scale
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Double scale
Find fourth proportional to 26,432.10, 36,441.01 and 20,999.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.