Home / 18,120.59-24,995.80-11,395.55

Finding the Fourth Proportional to 18,120.59, 24,995.80 and 11,395.55

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Solution

The fourth proportional to 18,120.59, 24,995.80 and 11,395.55 is: 15,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.59 : 24,995.80 = 11,395.55 : x
  2. Step 2: Convert to fraction form
    18,120.59/24,995.80 = 11,395.55/x
  3. Step 3: Cross multiply
    18,120.59x = 24,995.80 × 11,395.55
  4. Step 4: Simplify right side
    18,120.59x = 284,840,831.71
  5. Step 5: Solve for x
    x = 284,840,831.71/18,120.59
  6. Step 6: Final answer
    x = 15,719.18

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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.