Home / 29,531.81-40,753.91-18,935.80

Finding the Fourth Proportional to 29,531.81, 40,753.91 and 18,935.80

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Solution

The fourth proportional to 29,531.81, 40,753.91 and 18,935.80 is: 26,131.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,531.81 : 40,753.91 = 18,935.80 : x
  2. Step 2: Convert to fraction form
    29,531.81/40,753.91 = 18,935.80/x
  3. Step 3: Cross multiply
    29,531.81x = 40,753.91 × 18,935.80
  4. Step 4: Simplify right side
    29,531.81x = 771,707,834.43
  5. Step 5: Solve for x
    x = 771,707,834.43/29,531.81
  6. Step 6: Final answer
    x = 26,131.41

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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.