Home / 18,724.12-25,865.86-14,972.20

Finding the Fourth Proportional to 18,724.12, 25,865.86 and 14,972.20

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Solution

The fourth proportional to 18,724.12, 25,865.86 and 14,972.20 is: 20,682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.12 : 25,865.86 = 14,972.20 : x
  2. Step 2: Convert to fraction form
    18,724.12/25,865.86 = 14,972.20/x
  3. Step 3: Cross multiply
    18,724.12x = 25,865.86 × 14,972.20
  4. Step 4: Simplify right side
    18,724.12x = 387,268,829.09
  5. Step 5: Solve for x
    x = 387,268,829.09/18,724.12
  6. Step 6: Final answer
    x = 20,682.89

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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.