Home / 15,572.56-21,490.60-8,859.14

Finding the Fourth Proportional to 15,572.56, 21,490.60 and 8,859.14

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Solution

The fourth proportional to 15,572.56, 21,490.60 and 8,859.14 is: 12,225.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.56 : 21,490.60 = 8,859.14 : x
  2. Step 2: Convert to fraction form
    15,572.56/21,490.60 = 8,859.14/x
  3. Step 3: Cross multiply
    15,572.56x = 21,490.60 × 8,859.14
  4. Step 4: Simplify right side
    15,572.56x = 190,388,234.08
  5. Step 5: Solve for x
    x = 190,388,234.08/15,572.56
  6. Step 6: Final answer
    x = 12,225.88

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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.