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Finding the Fourth Proportional to 29,211.40, 43,780.48 and 12,551.64

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Solution

The fourth proportional to 29,211.40, 43,780.48 and 12,551.64 is: 18,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,211.40 : 43,780.48 = 12,551.64 : x
  2. Step 2: Convert to fraction form
    29,211.40/43,780.48 = 12,551.64/x
  3. Step 3: Cross multiply
    29,211.40x = 43,780.48 × 12,551.64
  4. Step 4: Simplify right side
    29,211.40x = 549,516,823.99
  5. Step 5: Solve for x
    x = 549,516,823.99/29,211.40
  6. Step 6: Final answer
    x = 18,811.73

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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.