Home / 28,234.47-38,963.77-15,487.75

Finding the Fourth Proportional to 28,234.47, 38,963.77 and 15,487.75

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Solution

The fourth proportional to 28,234.47, 38,963.77 and 15,487.75 is: 21,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.47 : 38,963.77 = 15,487.75 : x
  2. Step 2: Convert to fraction form
    28,234.47/38,963.77 = 15,487.75/x
  3. Step 3: Cross multiply
    28,234.47x = 38,963.77 × 15,487.75
  4. Step 4: Simplify right side
    28,234.47x = 603,461,128.82
  5. Step 5: Solve for x
    x = 603,461,128.82/28,234.47
  6. Step 6: Final answer
    x = 21,373.21

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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.