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Finding the Fourth Proportional to 9,920.70, 14,864.85 and 7,296.30

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Solution

The fourth proportional to 9,920.70, 14,864.85 and 7,296.30 is: 10,932.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.70 : 14,864.85 = 7,296.30 : x
  2. Step 2: Convert to fraction form
    9,920.70/14,864.85 = 7,296.30/x
  3. Step 3: Cross multiply
    9,920.70x = 14,864.85 × 7,296.30
  4. Step 4: Simplify right side
    9,920.70x = 108,458,405.06
  5. Step 5: Solve for x
    x = 108,458,405.06/9,920.70
  6. Step 6: Final answer
    x = 10,932.54

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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.