Home / 28,136.86-38,827.41-15,387.57

Finding the Fourth Proportional to 28,136.86, 38,827.41 and 15,387.57

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Solution

The fourth proportional to 28,136.86, 38,827.41 and 15,387.57 is: 21,234.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.86 : 38,827.41 = 15,387.57 : x
  2. Step 2: Convert to fraction form
    28,136.86/38,827.41 = 15,387.57/x
  3. Step 3: Cross multiply
    28,136.86x = 38,827.41 × 15,387.57
  4. Step 4: Simplify right side
    28,136.86x = 597,459,489.29
  5. Step 5: Solve for x
    x = 597,459,489.29/28,136.86
  6. Step 6: Final answer
    x = 21,234.05

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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.