Home / 13,515.13-18,650.25-7,545.63

Finding the Fourth Proportional to 13,515.13, 18,650.25 and 7,545.63

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Solution

The fourth proportional to 13,515.13, 18,650.25 and 7,545.63 is: 10,412.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.13 : 18,650.25 = 7,545.63 : x
  2. Step 2: Convert to fraction form
    13,515.13/18,650.25 = 7,545.63/x
  3. Step 3: Cross multiply
    13,515.13x = 18,650.25 × 7,545.63
  4. Step 4: Simplify right side
    13,515.13x = 140,727,885.91
  5. Step 5: Solve for x
    x = 140,727,885.91/13,515.13
  6. Step 6: Final answer
    x = 10,412.62

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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.