Home / 15,211.60-22,817.40-12,805.90

Finding the Fourth Proportional to 15,211.60, 22,817.40 and 12,805.90

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Solution

The fourth proportional to 15,211.60, 22,817.40 and 12,805.90 is: 19,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.60 : 22,817.40 = 12,805.90 : x
  2. Step 2: Convert to fraction form
    15,211.60/22,817.40 = 12,805.90/x
  3. Step 3: Cross multiply
    15,211.60x = 22,817.40 × 12,805.90
  4. Step 4: Simplify right side
    15,211.60x = 292,197,342.66
  5. Step 5: Solve for x
    x = 292,197,342.66/15,211.60
  6. Step 6: Final answer
    x = 19,208.85

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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.