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Finding the Fourth Proportional to 15,239.01, 21,027.92 and 8,867.32

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Solution

The fourth proportional to 15,239.01, 21,027.92 and 8,867.32 is: 12,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.01 : 21,027.92 = 8,867.32 : x
  2. Step 2: Convert to fraction form
    15,239.01/21,027.92 = 8,867.32/x
  3. Step 3: Cross multiply
    15,239.01x = 21,027.92 × 8,867.32
  4. Step 4: Simplify right side
    15,239.01x = 186,461,295.57
  5. Step 5: Solve for x
    x = 186,461,295.57/15,239.01
  6. Step 6: Final answer
    x = 12,235.79

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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.