Home / 39,985.18-55,179.56-22,081.40

Finding the Fourth Proportional to 39,985.18, 55,179.56 and 22,081.40

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Solution

The fourth proportional to 39,985.18, 55,179.56 and 22,081.40 is: 30,472.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.18 : 55,179.56 = 22,081.40 : x
  2. Step 2: Convert to fraction form
    39,985.18/55,179.56 = 22,081.40/x
  3. Step 3: Cross multiply
    39,985.18x = 55,179.56 × 22,081.40
  4. Step 4: Simplify right side
    39,985.18x = 1,218,441,922.41
  5. Step 5: Solve for x
    x = 1,218,441,922.41/39,985.18
  6. Step 6: Final answer
    x = 30,472.34

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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.