Home / 13,127.68-18,118.92-12,711.52

Finding the Fourth Proportional to 13,127.68, 18,118.92 and 12,711.52

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Solution

The fourth proportional to 13,127.68, 18,118.92 and 12,711.52 is: 17,544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.68 : 18,118.92 = 12,711.52 : x
  2. Step 2: Convert to fraction form
    13,127.68/18,118.92 = 12,711.52/x
  3. Step 3: Cross multiply
    13,127.68x = 18,118.92 × 12,711.52
  4. Step 4: Simplify right side
    13,127.68x = 230,319,013.96
  5. Step 5: Solve for x
    x = 230,319,013.96/13,127.68
  6. Step 6: Final answer
    x = 17,544.53

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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.