Home / 28,136.88-38,840.85-17,531.76

Finding the Fourth Proportional to 28,136.88, 38,840.85 and 17,531.76

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Solution

The fourth proportional to 28,136.88, 38,840.85 and 17,531.76 is: 24,201.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.88 : 38,840.85 = 17,531.76 : x
  2. Step 2: Convert to fraction form
    28,136.88/38,840.85 = 17,531.76/x
  3. Step 3: Cross multiply
    28,136.88x = 38,840.85 × 17,531.76
  4. Step 4: Simplify right side
    28,136.88x = 680,948,266.19
  5. Step 5: Solve for x
    x = 680,948,266.19/28,136.88
  6. Step 6: Final answer
    x = 24,201.27

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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.