Home / 20,842.20-28,765.87-12,349.10

Finding the Fourth Proportional to 20,842.20, 28,765.87 and 12,349.10

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Solution

The fourth proportional to 20,842.20, 28,765.87 and 12,349.10 is: 17,043.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.20 : 28,765.87 = 12,349.10 : x
  2. Step 2: Convert to fraction form
    20,842.20/28,765.87 = 12,349.10/x
  3. Step 3: Cross multiply
    20,842.20x = 28,765.87 × 12,349.10
  4. Step 4: Simplify right side
    20,842.20x = 355,232,646.26
  5. Step 5: Solve for x
    x = 355,232,646.26/20,842.20
  6. Step 6: Final answer
    x = 17,043.91

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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.