Home / 13,761.60-18,990.80-7,473.92

Finding the Fourth Proportional to 13,761.60, 18,990.80 and 7,473.92

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Solution

The fourth proportional to 13,761.60, 18,990.80 and 7,473.92 is: 10,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.60 : 18,990.80 = 7,473.92 : x
  2. Step 2: Convert to fraction form
    13,761.60/18,990.80 = 7,473.92/x
  3. Step 3: Cross multiply
    13,761.60x = 18,990.80 × 7,473.92
  4. Step 4: Simplify right side
    13,761.60x = 141,935,719.94
  5. Step 5: Solve for x
    x = 141,935,719.94/13,761.60
  6. Step 6: Final answer
    x = 10,313.90

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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.