Home / 14,380.47-21,531.69-7,440.39

Finding the Fourth Proportional to 14,380.47, 21,531.69 and 7,440.39

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Solution

The fourth proportional to 14,380.47, 21,531.69 and 7,440.39 is: 11,140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,380.47 : 21,531.69 = 7,440.39 : x
  2. Step 2: Convert to fraction form
    14,380.47/21,531.69 = 7,440.39/x
  3. Step 3: Cross multiply
    14,380.47x = 21,531.69 × 7,440.39
  4. Step 4: Simplify right side
    14,380.47x = 160,204,170.96
  5. Step 5: Solve for x
    x = 160,204,170.96/14,380.47
  6. Step 6: Final answer
    x = 11,140.40

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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.