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Finding the Fourth Proportional to 9,999.40, 14,981.10 and 4,793.80

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Solution

The fourth proportional to 9,999.40, 14,981.10 and 4,793.80 is: 7,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.40 : 14,981.10 = 4,793.80 : x
  2. Step 2: Convert to fraction form
    9,999.40/14,981.10 = 4,793.80/x
  3. Step 3: Cross multiply
    9,999.40x = 14,981.10 × 4,793.80
  4. Step 4: Simplify right side
    9,999.40x = 71,816,397.18
  5. Step 5: Solve for x
    x = 71,816,397.18/9,999.40
  6. Step 6: Final answer
    x = 7,182.07

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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.