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Finding the Fourth Proportional to 11,432.88, 15,764.40 and 7,447.68

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Solution

The fourth proportional to 11,432.88, 15,764.40 and 7,447.68 is: 10,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,432.88 : 15,764.40 = 7,447.68 : x
  2. Step 2: Convert to fraction form
    11,432.88/15,764.40 = 7,447.68/x
  3. Step 3: Cross multiply
    11,432.88x = 15,764.40 × 7,447.68
  4. Step 4: Simplify right side
    11,432.88x = 117,408,206.59
  5. Step 5: Solve for x
    x = 117,408,206.59/11,432.88
  6. Step 6: Final answer
    x = 10,269.35

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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.