Home / 39,759.48-54,869.08-21,854.92

Finding the Fourth Proportional to 39,759.48, 54,869.08 and 21,854.92

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Solution

The fourth proportional to 39,759.48, 54,869.08 and 21,854.92 is: 30,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.48 : 54,869.08 = 21,854.92 : x
  2. Step 2: Convert to fraction form
    39,759.48/54,869.08 = 21,854.92/x
  3. Step 3: Cross multiply
    39,759.48x = 54,869.08 × 21,854.92
  4. Step 4: Simplify right side
    39,759.48x = 1,199,159,353.87
  5. Step 5: Solve for x
    x = 1,199,159,353.87/39,759.48
  6. Step 6: Final answer
    x = 30,160.34

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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.