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Finding the Fourth Proportional to 10,645.60, 15,957.60 and 6,260.80

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Solution

The fourth proportional to 10,645.60, 15,957.60 and 6,260.80 is: 9,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,645.60 : 15,957.60 = 6,260.80 : x
  2. Step 2: Convert to fraction form
    10,645.60/15,957.60 = 6,260.80/x
  3. Step 3: Cross multiply
    10,645.60x = 15,957.60 × 6,260.80
  4. Step 4: Simplify right side
    10,645.60x = 99,907,342.08
  5. Step 5: Solve for x
    x = 99,907,342.08/10,645.60
  6. Step 6: Final answer
    x = 9,384.85

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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.