Home / 13,251.60-19,877.40-12,376.80

Finding the Fourth Proportional to 13,251.60, 19,877.40 and 12,376.80

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Solution

The fourth proportional to 13,251.60, 19,877.40 and 12,376.80 is: 18,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.60 : 19,877.40 = 12,376.80 : x
  2. Step 2: Convert to fraction form
    13,251.60/19,877.40 = 12,376.80/x
  3. Step 3: Cross multiply
    13,251.60x = 19,877.40 × 12,376.80
  4. Step 4: Simplify right side
    13,251.60x = 246,018,604.32
  5. Step 5: Solve for x
    x = 246,018,604.32/13,251.60
  6. Step 6: Final answer
    x = 18,565.20

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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.