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Finding the Fourth Proportional to 15,057.60, 20,803.08 and 10,366.88

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Solution

The fourth proportional to 15,057.60, 20,803.08 and 10,366.88 is: 14,322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.60 : 20,803.08 = 10,366.88 : x
  2. Step 2: Convert to fraction form
    15,057.60/20,803.08 = 10,366.88/x
  3. Step 3: Cross multiply
    15,057.60x = 20,803.08 × 10,366.88
  4. Step 4: Simplify right side
    15,057.60x = 215,663,033.99
  5. Step 5: Solve for x
    x = 215,663,033.99/15,057.60
  6. Step 6: Final answer
    x = 14,322.54

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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.