Home / 14,447.40-21,671.10-9,781.80

Finding the Fourth Proportional to 14,447.40, 21,671.10 and 9,781.80

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Solution

The fourth proportional to 14,447.40, 21,671.10 and 9,781.80 is: 14,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,447.40 : 21,671.10 = 9,781.80 : x
  2. Step 2: Convert to fraction form
    14,447.40/21,671.10 = 9,781.80/x
  3. Step 3: Cross multiply
    14,447.40x = 21,671.10 × 9,781.80
  4. Step 4: Simplify right side
    14,447.40x = 211,982,365.98
  5. Step 5: Solve for x
    x = 211,982,365.98/14,447.40
  6. Step 6: Final answer
    x = 14,672.70

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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.