Home / 10,545.12-15,819.30-3,618

Finding the Fourth Proportional to 10,545.12, 15,819.30 and 3,618

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Solution

The fourth proportional to 10,545.12, 15,819.30 and 3,618 is: 5,427.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,545.12 : 15,819.30 = 3,618 : x
  2. Step 2: Convert to fraction form
    10,545.12/15,819.30 = 3,618/x
  3. Step 3: Cross multiply
    10,545.12x = 15,819.30 × 3,618
  4. Step 4: Simplify right side
    10,545.12x = 57,234,227.40
  5. Step 5: Solve for x
    x = 57,234,227.40/10,545.12
  6. Step 6: Final answer
    x = 5,427.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.