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Finding the Fourth Proportional to 9,880.60, 14,809.74 and 8,711.68

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Solution

The fourth proportional to 9,880.60, 14,809.74 and 8,711.68 is: 13,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,880.60 : 14,809.74 = 8,711.68 : x
  2. Step 2: Convert to fraction form
    9,880.60/14,809.74 = 8,711.68/x
  3. Step 3: Cross multiply
    9,880.60x = 14,809.74 × 8,711.68
  4. Step 4: Simplify right side
    9,880.60x = 129,017,715.76
  5. Step 5: Solve for x
    x = 129,017,715.76/9,880.60
  6. Step 6: Final answer
    x = 13,057.68

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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.