Home / 28,337.20-39,103.77-15,761.14

Finding the Fourth Proportional to 28,337.20, 39,103.77 and 15,761.14

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Solution

The fourth proportional to 28,337.20, 39,103.77 and 15,761.14 is: 21,749.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.20 : 39,103.77 = 15,761.14 : x
  2. Step 2: Convert to fraction form
    28,337.20/39,103.77 = 15,761.14/x
  3. Step 3: Cross multiply
    28,337.20x = 39,103.77 × 15,761.14
  4. Step 4: Simplify right side
    28,337.20x = 616,319,993.50
  5. Step 5: Solve for x
    x = 616,319,993.50/28,337.20
  6. Step 6: Final answer
    x = 21,749.50

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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.