Home / 15,572.80-21,490.14-8,499.22

Finding the Fourth Proportional to 15,572.80, 21,490.14 and 8,499.22

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Solution

The fourth proportional to 15,572.80, 21,490.14 and 8,499.22 is: 11,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.80 : 21,490.14 = 8,499.22 : x
  2. Step 2: Convert to fraction form
    15,572.80/21,490.14 = 8,499.22/x
  3. Step 3: Cross multiply
    15,572.80x = 21,490.14 × 8,499.22
  4. Step 4: Simplify right side
    15,572.80x = 182,649,298.99
  5. Step 5: Solve for x
    x = 182,649,298.99/15,572.80
  6. Step 6: Final answer
    x = 11,728.74

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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.