Home / 13,545.72-18,675.18-9,765.72

Finding the Fourth Proportional to 13,545.72, 18,675.18 and 9,765.72

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Solution

The fourth proportional to 13,545.72, 18,675.18 and 9,765.72 is: 13,463.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.72 : 18,675.18 = 9,765.72 : x
  2. Step 2: Convert to fraction form
    13,545.72/18,675.18 = 9,765.72/x
  3. Step 3: Cross multiply
    13,545.72x = 18,675.18 × 9,765.72
  4. Step 4: Simplify right side
    13,545.72x = 182,376,578.83
  5. Step 5: Solve for x
    x = 182,376,578.83/13,545.72
  6. Step 6: Final answer
    x = 13,463.78

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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.