Home / 15,013.60-20,724.61-13,438.96

Finding the Fourth Proportional to 15,013.60, 20,724.61 and 13,438.96

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Solution

The fourth proportional to 15,013.60, 20,724.61 and 13,438.96 is: 18,550.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.60 : 20,724.61 = 13,438.96 : x
  2. Step 2: Convert to fraction form
    15,013.60/20,724.61 = 13,438.96/x
  3. Step 3: Cross multiply
    15,013.60x = 20,724.61 × 13,438.96
  4. Step 4: Simplify right side
    15,013.60x = 278,517,204.81
  5. Step 5: Solve for x
    x = 278,517,204.81/15,013.60
  6. Step 6: Final answer
    x = 18,550.99

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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.