Home / 13,125.38-18,106.77-8,877.92

Finding the Fourth Proportional to 13,125.38, 18,106.77 and 8,877.92

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Solution

The fourth proportional to 13,125.38, 18,106.77 and 8,877.92 is: 12,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.38 : 18,106.77 = 8,877.92 : x
  2. Step 2: Convert to fraction form
    13,125.38/18,106.77 = 8,877.92/x
  3. Step 3: Cross multiply
    13,125.38x = 18,106.77 × 8,877.92
  4. Step 4: Simplify right side
    13,125.38x = 160,750,500.13
  5. Step 5: Solve for x
    x = 160,750,500.13/13,125.38
  6. Step 6: Final answer
    x = 12,247.31

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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.