Home / 15,199.60-20,969.40-8,910.76

Finding the Fourth Proportional to 15,199.60, 20,969.40 and 8,910.76

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Solution

The fourth proportional to 15,199.60, 20,969.40 and 8,910.76 is: 12,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,199.60 : 20,969.40 = 8,910.76 : x
  2. Step 2: Convert to fraction form
    15,199.60/20,969.40 = 8,910.76/x
  3. Step 3: Cross multiply
    15,199.60x = 20,969.40 × 8,910.76
  4. Step 4: Simplify right side
    15,199.60x = 186,853,290.74
  5. Step 5: Solve for x
    x = 186,853,290.74/15,199.60
  6. Step 6: Final answer
    x = 12,293.30

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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.