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Finding the Fourth Proportional to 18,770.57, 25,904.18 and 10,387.07

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Solution

The fourth proportional to 18,770.57, 25,904.18 and 10,387.07 is: 14,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.57 : 25,904.18 = 10,387.07 : x
  2. Step 2: Convert to fraction form
    18,770.57/25,904.18 = 10,387.07/x
  3. Step 3: Cross multiply
    18,770.57x = 25,904.18 × 10,387.07
  4. Step 4: Simplify right side
    18,770.57x = 269,068,530.95
  5. Step 5: Solve for x
    x = 269,068,530.95/18,770.57
  6. Step 6: Final answer
    x = 14,334.60

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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.