Home / 10,812.60-16,217.70-8,861.40

Finding the Fourth Proportional to 10,812.60, 16,217.70 and 8,861.40

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Solution

The fourth proportional to 10,812.60, 16,217.70 and 8,861.40 is: 13,291.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.60 : 16,217.70 = 8,861.40 : x
  2. Step 2: Convert to fraction form
    10,812.60/16,217.70 = 8,861.40/x
  3. Step 3: Cross multiply
    10,812.60x = 16,217.70 × 8,861.40
  4. Step 4: Simplify right side
    10,812.60x = 143,711,526.78
  5. Step 5: Solve for x
    x = 143,711,526.78/10,812.60
  6. Step 6: Final answer
    x = 13,291.12

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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.