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Finding the Fourth Proportional to 9,959.80, 14,939.70 and 9,862.60

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Solution

The fourth proportional to 9,959.80, 14,939.70 and 9,862.60 is: 14,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,959.80 : 14,939.70 = 9,862.60 : x
  2. Step 2: Convert to fraction form
    9,959.80/14,939.70 = 9,862.60/x
  3. Step 3: Cross multiply
    9,959.80x = 14,939.70 × 9,862.60
  4. Step 4: Simplify right side
    9,959.80x = 147,344,285.22
  5. Step 5: Solve for x
    x = 147,344,285.22/9,959.80
  6. Step 6: Final answer
    x = 14,793.90

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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.