Home / 13,548.57-18,689.50-7,882.68

Finding the Fourth Proportional to 13,548.57, 18,689.50 and 7,882.68

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Solution

The fourth proportional to 13,548.57, 18,689.50 and 7,882.68 is: 10,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.57 : 18,689.50 = 7,882.68 : x
  2. Step 2: Convert to fraction form
    13,548.57/18,689.50 = 7,882.68/x
  3. Step 3: Cross multiply
    13,548.57x = 18,689.50 × 7,882.68
  4. Step 4: Simplify right side
    13,548.57x = 147,323,347.86
  5. Step 5: Solve for x
    x = 147,323,347.86/13,548.57
  6. Step 6: Final answer
    x = 10,873.72

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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.