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Finding the Fourth Proportional to 18,570, 25,627.95 and 10,612.05

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Solution

The fourth proportional to 18,570, 25,627.95 and 10,612.05 is: 14,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570 : 25,627.95 = 10,612.05 : x
  2. Step 2: Convert to fraction form
    18,570/25,627.95 = 10,612.05/x
  3. Step 3: Cross multiply
    18,570x = 25,627.95 × 10,612.05
  4. Step 4: Simplify right side
    18,570x = 271,965,086.80
  5. Step 5: Solve for x
    x = 271,965,086.80/18,570
  6. Step 6: Final answer
    x = 14,645.40

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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.