Home / 13,427.60-20,141.40-11,256.80

Finding the Fourth Proportional to 13,427.60, 20,141.40 and 11,256.80

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Solution

The fourth proportional to 13,427.60, 20,141.40 and 11,256.80 is: 16,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.60 : 20,141.40 = 11,256.80 : x
  2. Step 2: Convert to fraction form
    13,427.60/20,141.40 = 11,256.80/x
  3. Step 3: Cross multiply
    13,427.60x = 20,141.40 × 11,256.80
  4. Step 4: Simplify right side
    13,427.60x = 226,727,711.52
  5. Step 5: Solve for x
    x = 226,727,711.52/13,427.60
  6. Step 6: Final answer
    x = 16,885.20

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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.