Home / 15,279.93-21,098.85-9,623.79

Finding the Fourth Proportional to 15,279.93, 21,098.85 and 9,623.79

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Solution

The fourth proportional to 15,279.93, 21,098.85 and 9,623.79 is: 13,288.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.93 : 21,098.85 = 9,623.79 : x
  2. Step 2: Convert to fraction form
    15,279.93/21,098.85 = 9,623.79/x
  3. Step 3: Cross multiply
    15,279.93x = 21,098.85 × 9,623.79
  4. Step 4: Simplify right side
    15,279.93x = 203,050,901.64
  5. Step 5: Solve for x
    x = 203,050,901.64/15,279.93
  6. Step 6: Final answer
    x = 13,288.73

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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.