Home / 39,947.69-55,128.11-22,043.36

Finding the Fourth Proportional to 39,947.69, 55,128.11 and 22,043.36

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Solution

The fourth proportional to 39,947.69, 55,128.11 and 22,043.36 is: 30,420.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,947.69 : 55,128.11 = 22,043.36 : x
  2. Step 2: Convert to fraction form
    39,947.69/55,128.11 = 22,043.36/x
  3. Step 3: Cross multiply
    39,947.69x = 55,128.11 × 22,043.36
  4. Step 4: Simplify right side
    39,947.69x = 1,215,208,774.85
  5. Step 5: Solve for x
    x = 1,215,208,774.85/39,947.69
  6. Step 6: Final answer
    x = 30,420.00

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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.