Home / 13,247.60-19,871.40-8,320.70

Finding the Fourth Proportional to 13,247.60, 19,871.40 and 8,320.70

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Solution

The fourth proportional to 13,247.60, 19,871.40 and 8,320.70 is: 12,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.60 : 19,871.40 = 8,320.70 : x
  2. Step 2: Convert to fraction form
    13,247.60/19,871.40 = 8,320.70/x
  3. Step 3: Cross multiply
    13,247.60x = 19,871.40 × 8,320.70
  4. Step 4: Simplify right side
    13,247.60x = 165,343,957.98
  5. Step 5: Solve for x
    x = 165,343,957.98/13,247.60
  6. Step 6: Final answer
    x = 12,481.05

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1.5x scale

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.