Home / 18,627.43-25,705.72-10,129.56

Finding the Fourth Proportional to 18,627.43, 25,705.72 and 10,129.56

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Solution

The fourth proportional to 18,627.43, 25,705.72 and 10,129.56 is: 13,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.43 : 25,705.72 = 10,129.56 : x
  2. Step 2: Convert to fraction form
    18,627.43/25,705.72 = 10,129.56/x
  3. Step 3: Cross multiply
    18,627.43x = 25,705.72 × 10,129.56
  4. Step 4: Simplify right side
    18,627.43x = 260,387,633.08
  5. Step 5: Solve for x
    x = 260,387,633.08/18,627.43
  6. Step 6: Final answer
    x = 13,978.72

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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.