Home / 20,298.60-28,010.52-12,339.72

Finding the Fourth Proportional to 20,298.60, 28,010.52 and 12,339.72

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Solution

The fourth proportional to 20,298.60, 28,010.52 and 12,339.72 is: 17,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.60 : 28,010.52 = 12,339.72 : x
  2. Step 2: Convert to fraction form
    20,298.60/28,010.52 = 12,339.72/x
  3. Step 3: Cross multiply
    20,298.60x = 28,010.52 × 12,339.72
  4. Step 4: Simplify right side
    20,298.60x = 345,641,973.85
  5. Step 5: Solve for x
    x = 345,641,973.85/20,298.60
  6. Step 6: Final answer
    x = 17,027.87

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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.