Home / 18,618.11-25,693.25-10,120.40

Finding the Fourth Proportional to 18,618.11, 25,693.25 and 10,120.40

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Solution

The fourth proportional to 18,618.11, 25,693.25 and 10,120.40 is: 13,966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.11 : 25,693.25 = 10,120.40 : x
  2. Step 2: Convert to fraction form
    18,618.11/25,693.25 = 10,120.40/x
  3. Step 3: Cross multiply
    18,618.11x = 25,693.25 × 10,120.40
  4. Step 4: Simplify right side
    18,618.11x = 260,025,967.30
  5. Step 5: Solve for x
    x = 260,025,967.30/18,618.11
  6. Step 6: Final answer
    x = 13,966.29

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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.