Home / 38,720.40-58,080.60-14,093.20

Finding the Fourth Proportional to 38,720.40, 58,080.60 and 14,093.20

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Solution

The fourth proportional to 38,720.40, 58,080.60 and 14,093.20 is: 21,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,720.40 : 58,080.60 = 14,093.20 : x
  2. Step 2: Convert to fraction form
    38,720.40/58,080.60 = 14,093.20/x
  3. Step 3: Cross multiply
    38,720.40x = 58,080.60 × 14,093.20
  4. Step 4: Simplify right side
    38,720.40x = 818,541,511.92
  5. Step 5: Solve for x
    x = 818,541,511.92/38,720.40
  6. Step 6: Final answer
    x = 21,139.80

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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.