Home / 15,291.30-21,102.05-8,922.27

Finding the Fourth Proportional to 15,291.30, 21,102.05 and 8,922.27

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Solution

The fourth proportional to 15,291.30, 21,102.05 and 8,922.27 is: 12,312.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.30 : 21,102.05 = 8,922.27 : x
  2. Step 2: Convert to fraction form
    15,291.30/21,102.05 = 8,922.27/x
  3. Step 3: Cross multiply
    15,291.30x = 21,102.05 × 8,922.27
  4. Step 4: Simplify right side
    15,291.30x = 188,278,143.04
  5. Step 5: Solve for x
    x = 188,278,143.04/15,291.30
  6. Step 6: Final answer
    x = 12,312.76

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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.