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Finding the Fourth Proportional to 35,892.40, 49,531.08 and 20,988.40

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Solution

The fourth proportional to 35,892.40, 49,531.08 and 20,988.40 is: 28,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,892.40 : 49,531.08 = 20,988.40 : x
  2. Step 2: Convert to fraction form
    35,892.40/49,531.08 = 20,988.40/x
  3. Step 3: Cross multiply
    35,892.40x = 49,531.08 × 20,988.40
  4. Step 4: Simplify right side
    35,892.40x = 1,039,578,119.47
  5. Step 5: Solve for x
    x = 1,039,578,119.47/35,892.40
  6. Step 6: Final answer
    x = 28,963.74

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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.