Home / 13,319.61-18,381.14-7,351.30

Finding the Fourth Proportional to 13,319.61, 18,381.14 and 7,351.30

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Solution

The fourth proportional to 13,319.61, 18,381.14 and 7,351.30 is: 10,144.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.61 : 18,381.14 = 7,351.30 : x
  2. Step 2: Convert to fraction form
    13,319.61/18,381.14 = 7,351.30/x
  3. Step 3: Cross multiply
    13,319.61x = 18,381.14 × 7,351.30
  4. Step 4: Simplify right side
    13,319.61x = 135,125,145.82
  5. Step 5: Solve for x
    x = 135,125,145.82/13,319.61
  6. Step 6: Final answer
    x = 10,144.83

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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.