Home / 10,002.61-15,003.92-5,319.69

Finding the Fourth Proportional to 10,002.61, 15,003.92 and 5,319.69

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Solution

The fourth proportional to 10,002.61, 15,003.92 and 5,319.69 is: 7,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,002.61 : 15,003.92 = 5,319.69 : x
  2. Step 2: Convert to fraction form
    10,002.61/15,003.92 = 5,319.69/x
  3. Step 3: Cross multiply
    10,002.61x = 15,003.92 × 5,319.69
  4. Step 4: Simplify right side
    10,002.61x = 79,816,203.18
  5. Step 5: Solve for x
    x = 79,816,203.18/10,002.61
  6. Step 6: Final answer
    x = 7,979.54

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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.