Home / 39,790.49-54,909.17-21,884.34

Finding the Fourth Proportional to 39,790.49, 54,909.17 and 21,884.34

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Solution

The fourth proportional to 39,790.49, 54,909.17 and 21,884.34 is: 30,199.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,790.49 : 54,909.17 = 21,884.34 : x
  2. Step 2: Convert to fraction form
    39,790.49/54,909.17 = 21,884.34/x
  3. Step 3: Cross multiply
    39,790.49x = 54,909.17 × 21,884.34
  4. Step 4: Simplify right side
    39,790.49x = 1,201,651,000.11
  5. Step 5: Solve for x
    x = 1,201,651,000.11/39,790.49
  6. Step 6: Final answer
    x = 30,199.46

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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.