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Finding the Fourth Proportional to 9,920.69, 14,884.91 and 4,370.13

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Solution

The fourth proportional to 9,920.69, 14,884.91 and 4,370.13 is: 6,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.69 : 14,884.91 = 4,370.13 : x
  2. Step 2: Convert to fraction form
    9,920.69/14,884.91 = 4,370.13/x
  3. Step 3: Cross multiply
    9,920.69x = 14,884.91 × 4,370.13
  4. Step 4: Simplify right side
    9,920.69x = 65,048,991.74
  5. Step 5: Solve for x
    x = 65,048,991.74/9,920.69
  6. Step 6: Final answer
    x = 6,556.90

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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.