Home / 15,287.08-21,096.69-8,572.78

Finding the Fourth Proportional to 15,287.08, 21,096.69 and 8,572.78

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Solution

The fourth proportional to 15,287.08, 21,096.69 and 8,572.78 is: 11,830.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.08 : 21,096.69 = 8,572.78 : x
  2. Step 2: Convert to fraction form
    15,287.08/21,096.69 = 8,572.78/x
  3. Step 3: Cross multiply
    15,287.08x = 21,096.69 × 8,572.78
  4. Step 4: Simplify right side
    15,287.08x = 180,857,282.10
  5. Step 5: Solve for x
    x = 180,857,282.10/15,287.08
  6. Step 6: Final answer
    x = 11,830.73

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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.