Home / 13,475.40-20,213.10-8,809.80

Finding the Fourth Proportional to 13,475.40, 20,213.10 and 8,809.80

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Solution

The fourth proportional to 13,475.40, 20,213.10 and 8,809.80 is: 13,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475.40 : 20,213.10 = 8,809.80 : x
  2. Step 2: Convert to fraction form
    13,475.40/20,213.10 = 8,809.80/x
  3. Step 3: Cross multiply
    13,475.40x = 20,213.10 × 8,809.80
  4. Step 4: Simplify right side
    13,475.40x = 178,073,368.38
  5. Step 5: Solve for x
    x = 178,073,368.38/13,475.40
  6. Step 6: Final answer
    x = 13,214.70

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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.