Home / 28,134.83-38,824.49-15,385.47

Finding the Fourth Proportional to 28,134.83, 38,824.49 and 15,385.47

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Solution

The fourth proportional to 28,134.83, 38,824.49 and 15,385.47 is: 21,231.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.83 : 38,824.49 = 15,385.47 : x
  2. Step 2: Convert to fraction form
    28,134.83/38,824.49 = 15,385.47/x
  3. Step 3: Cross multiply
    28,134.83x = 38,824.49 × 15,385.47
  4. Step 4: Simplify right side
    28,134.83x = 597,333,026.16
  5. Step 5: Solve for x
    x = 597,333,026.16/28,134.83
  6. Step 6: Final answer
    x = 21,231.09

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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.