Home / 39,947.81-55,126.10-22,039.92

Finding the Fourth Proportional to 39,947.81, 55,126.10 and 22,039.92

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Solution

The fourth proportional to 39,947.81, 55,126.10 and 22,039.92 is: 30,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,947.81 : 55,126.10 = 22,039.92 : x
  2. Step 2: Convert to fraction form
    39,947.81/55,126.10 = 22,039.92/x
  3. Step 3: Cross multiply
    39,947.81x = 55,126.10 × 22,039.92
  4. Step 4: Simplify right side
    39,947.81x = 1,214,974,723.71
  5. Step 5: Solve for x
    x = 1,214,974,723.71/39,947.81
  6. Step 6: Final answer
    x = 30,414.05

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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.