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Finding the Fourth Proportional to 15,920.22, 23,863.65 and 8,889.91

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Solution

The fourth proportional to 15,920.22, 23,863.65 and 8,889.91 is: 13,325.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.22 : 23,863.65 = 8,889.91 : x
  2. Step 2: Convert to fraction form
    15,920.22/23,863.65 = 8,889.91/x
  3. Step 3: Cross multiply
    15,920.22x = 23,863.65 × 8,889.91
  4. Step 4: Simplify right side
    15,920.22x = 212,145,700.77
  5. Step 5: Solve for x
    x = 212,145,700.77/15,920.22
  6. Step 6: Final answer
    x = 13,325.55

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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.