Home / 39,862.11-55,010.13-21,957.69

Finding the Fourth Proportional to 39,862.11, 55,010.13 and 21,957.69

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Solution

The fourth proportional to 39,862.11, 55,010.13 and 21,957.69 is: 30,301.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.11 : 55,010.13 = 21,957.69 : x
  2. Step 2: Convert to fraction form
    39,862.11/55,010.13 = 21,957.69/x
  3. Step 3: Cross multiply
    39,862.11x = 55,010.13 × 21,957.69
  4. Step 4: Simplify right side
    39,862.11x = 1,207,895,381.40
  5. Step 5: Solve for x
    x = 1,207,895,381.40/39,862.11
  6. Step 6: Final answer
    x = 30,301.84

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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.