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Finding the Fourth Proportional to 18,573.74, 25,601.80 and 15,210.62

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Solution

The fourth proportional to 18,573.74, 25,601.80 and 15,210.62 is: 20,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.74 : 25,601.80 = 15,210.62 : x
  2. Step 2: Convert to fraction form
    18,573.74/25,601.80 = 15,210.62/x
  3. Step 3: Cross multiply
    18,573.74x = 25,601.80 × 15,210.62
  4. Step 4: Simplify right side
    18,573.74x = 389,419,251.12
  5. Step 5: Solve for x
    x = 389,419,251.12/18,573.74
  6. Step 6: Final answer
    x = 20,966.12

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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.