Home / 15,812.83-21,780.78-11,024.20

Finding the Fourth Proportional to 15,812.83, 21,780.78 and 11,024.20

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Solution

The fourth proportional to 15,812.83, 21,780.78 and 11,024.20 is: 15,184.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.83 : 21,780.78 = 11,024.20 : x
  2. Step 2: Convert to fraction form
    15,812.83/21,780.78 = 11,024.20/x
  3. Step 3: Cross multiply
    15,812.83x = 21,780.78 × 11,024.20
  4. Step 4: Simplify right side
    15,812.83x = 240,115,565.97
  5. Step 5: Solve for x
    x = 240,115,565.97/15,812.83
  6. Step 6: Final answer
    x = 15,184.86

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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.