Home / 29,114.40-43,639.20-12,471.60

Finding the Fourth Proportional to 29,114.40, 43,639.20 and 12,471.60

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Solution

The fourth proportional to 29,114.40, 43,639.20 and 12,471.60 is: 18,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,114.40 : 43,639.20 = 12,471.60 : x
  2. Step 2: Convert to fraction form
    29,114.40/43,639.20 = 12,471.60/x
  3. Step 3: Cross multiply
    29,114.40x = 43,639.20 × 12,471.60
  4. Step 4: Simplify right side
    29,114.40x = 544,250,646.72
  5. Step 5: Solve for x
    x = 544,250,646.72/29,114.40
  6. Step 6: Final answer
    x = 18,693.52

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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.