Home / 18,627.38-25,705.93-10,129.45

Finding the Fourth Proportional to 18,627.38, 25,705.93 and 10,129.45

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Solution

The fourth proportional to 18,627.38, 25,705.93 and 10,129.45 is: 13,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.38 : 25,705.93 = 10,129.45 : x
  2. Step 2: Convert to fraction form
    18,627.38/25,705.93 = 10,129.45/x
  3. Step 3: Cross multiply
    18,627.38x = 25,705.93 × 10,129.45
  4. Step 4: Simplify right side
    18,627.38x = 260,386,843.05
  5. Step 5: Solve for x
    x = 260,386,843.05/18,627.38
  6. Step 6: Final answer
    x = 13,978.71

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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.