Home / 30,731.21-42,319.81-26,696.20

Finding the Fourth Proportional to 30,731.21, 42,319.81 and 26,696.20

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Solution

The fourth proportional to 30,731.21, 42,319.81 and 26,696.20 is: 36,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,731.21 : 42,319.81 = 26,696.20 : x
  2. Step 2: Convert to fraction form
    30,731.21/42,319.81 = 26,696.20/x
  3. Step 3: Cross multiply
    30,731.21x = 42,319.81 × 26,696.20
  4. Step 4: Simplify right side
    30,731.21x = 1,129,777,939.18
  5. Step 5: Solve for x
    x = 1,129,777,939.18/30,731.21
  6. Step 6: Final answer
    x = 36,763.21

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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.