Home / 39,447.45-54,437.04-21,543.21

Finding the Fourth Proportional to 39,447.45, 54,437.04 and 21,543.21

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Solution

The fourth proportional to 39,447.45, 54,437.04 and 21,543.21 is: 29,729.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.45 : 54,437.04 = 21,543.21 : x
  2. Step 2: Convert to fraction form
    39,447.45/54,437.04 = 21,543.21/x
  3. Step 3: Cross multiply
    39,447.45x = 54,437.04 × 21,543.21
  4. Step 4: Simplify right side
    39,447.45x = 1,172,748,584.50
  5. Step 5: Solve for x
    x = 1,172,748,584.50/39,447.45
  6. Step 6: Final answer
    x = 29,729.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.