Home / 27,136.85-40,635.17-18,729.31

Finding the Fourth Proportional to 27,136.85, 40,635.17 and 18,729.31

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Solution

The fourth proportional to 27,136.85, 40,635.17 and 18,729.31 is: 28,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,136.85 : 40,635.17 = 18,729.31 : x
  2. Step 2: Convert to fraction form
    27,136.85/40,635.17 = 18,729.31/x
  3. Step 3: Cross multiply
    27,136.85x = 40,635.17 × 18,729.31
  4. Step 4: Simplify right side
    27,136.85x = 761,068,516.07
  5. Step 5: Solve for x
    x = 761,068,516.07/27,136.85
  6. Step 6: Final answer
    x = 28,045.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.