Home / 10,279.32-15,416.55-4,729.20

Finding the Fourth Proportional to 10,279.32, 15,416.55 and 4,729.20

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Solution

The fourth proportional to 10,279.32, 15,416.55 and 4,729.20 is: 7,092.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.32 : 15,416.55 = 4,729.20 : x
  2. Step 2: Convert to fraction form
    10,279.32/15,416.55 = 4,729.20/x
  3. Step 3: Cross multiply
    10,279.32x = 15,416.55 × 4,729.20
  4. Step 4: Simplify right side
    10,279.32x = 72,907,948.26
  5. Step 5: Solve for x
    x = 72,907,948.26/10,279.32
  6. Step 6: Final answer
    x = 7,092.68

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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.