Home / 18,117.28-24,993.34-12,815.02

Finding the Fourth Proportional to 18,117.28, 24,993.34 and 12,815.02

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Solution

The fourth proportional to 18,117.28, 24,993.34 and 12,815.02 is: 17,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.28 : 24,993.34 = 12,815.02 : x
  2. Step 2: Convert to fraction form
    18,117.28/24,993.34 = 12,815.02/x
  3. Step 3: Cross multiply
    18,117.28x = 24,993.34 × 12,815.02
  4. Step 4: Simplify right side
    18,117.28x = 320,290,151.17
  5. Step 5: Solve for x
    x = 320,290,151.17/18,117.28
  6. Step 6: Final answer
    x = 17,678.71

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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.