Home / 15,122.52-20,879.46-9,459.72

Finding the Fourth Proportional to 15,122.52, 20,879.46 and 9,459.72

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Solution

The fourth proportional to 15,122.52, 20,879.46 and 9,459.72 is: 13,060.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.52 : 20,879.46 = 9,459.72 : x
  2. Step 2: Convert to fraction form
    15,122.52/20,879.46 = 9,459.72/x
  3. Step 3: Cross multiply
    15,122.52x = 20,879.46 × 9,459.72
  4. Step 4: Simplify right side
    15,122.52x = 197,513,845.35
  5. Step 5: Solve for x
    x = 197,513,845.35/15,122.52
  6. Step 6: Final answer
    x = 13,060.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.