Home / 18,627.17-25,705.59-10,129.35

Finding the Fourth Proportional to 18,627.17, 25,705.59 and 10,129.35

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Solution

The fourth proportional to 18,627.17, 25,705.59 and 10,129.35 is: 13,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.17 : 25,705.59 = 10,129.35 : x
  2. Step 2: Convert to fraction form
    18,627.17/25,705.59 = 10,129.35/x
  3. Step 3: Cross multiply
    18,627.17x = 25,705.59 × 10,129.35
  4. Step 4: Simplify right side
    18,627.17x = 260,380,976.48
  5. Step 5: Solve for x
    x = 260,380,976.48/18,627.17
  6. Step 6: Final answer
    x = 13,978.56

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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.