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Finding the Fourth Proportional to 10,617.60, 15,929.60 and 7,545.60

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Solution

The fourth proportional to 10,617.60, 15,929.60 and 7,545.60 is: 11,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,617.60 : 15,929.60 = 7,545.60 : x
  2. Step 2: Convert to fraction form
    10,617.60/15,929.60 = 7,545.60/x
  3. Step 3: Cross multiply
    10,617.60x = 15,929.60 × 7,545.60
  4. Step 4: Simplify right side
    10,617.60x = 120,198,389.76
  5. Step 5: Solve for x
    x = 120,198,389.76/10,617.60
  6. Step 6: Final answer
    x = 11,320.67

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1.5x scale

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.