Home / 12,747.60-19,123.47-4,432.55

Finding the Fourth Proportional to 12,747.60, 19,123.47 and 4,432.55

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Solution

The fourth proportional to 12,747.60, 19,123.47 and 4,432.55 is: 6,649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.60 : 19,123.47 = 4,432.55 : x
  2. Step 2: Convert to fraction form
    12,747.60/19,123.47 = 4,432.55/x
  3. Step 3: Cross multiply
    12,747.60x = 19,123.47 × 4,432.55
  4. Step 4: Simplify right side
    12,747.60x = 84,765,641.33
  5. Step 5: Solve for x
    x = 84,765,641.33/12,747.60
  6. Step 6: Final answer
    x = 6,649.54

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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.