Home / 28,995.42-40,012.56-16,420.20

Finding the Fourth Proportional to 28,995.42, 40,012.56 and 16,420.20

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Solution

The fourth proportional to 28,995.42, 40,012.56 and 16,420.20 is: 22,659.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.42 : 40,012.56 = 16,420.20 : x
  2. Step 2: Convert to fraction form
    28,995.42/40,012.56 = 16,420.20/x
  3. Step 3: Cross multiply
    28,995.42x = 40,012.56 × 16,420.20
  4. Step 4: Simplify right side
    28,995.42x = 657,014,237.71
  5. Step 5: Solve for x
    x = 657,014,237.71/28,995.42
  6. Step 6: Final answer
    x = 22,659.24

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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.