Home / 15,503.32-21,394.11-8,789.56

Finding the Fourth Proportional to 15,503.32, 21,394.11 and 8,789.56

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Solution

The fourth proportional to 15,503.32, 21,394.11 and 8,789.56 is: 12,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.32 : 21,394.11 = 8,789.56 : x
  2. Step 2: Convert to fraction form
    15,503.32/21,394.11 = 8,789.56/x
  3. Step 3: Cross multiply
    15,503.32x = 21,394.11 × 8,789.56
  4. Step 4: Simplify right side
    15,503.32x = 188,044,706.52
  5. Step 5: Solve for x
    x = 188,044,706.52/15,503.32
  6. Step 6: Final answer
    x = 12,129.32

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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.