Home / 39,979.05-55,171.35-22,075.20

Finding the Fourth Proportional to 39,979.05, 55,171.35 and 22,075.20

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Solution

The fourth proportional to 39,979.05, 55,171.35 and 22,075.20 is: 30,463.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.05 : 55,171.35 = 22,075.20 : x
  2. Step 2: Convert to fraction form
    39,979.05/55,171.35 = 22,075.20/x
  3. Step 3: Cross multiply
    39,979.05x = 55,171.35 × 22,075.20
  4. Step 4: Simplify right side
    39,979.05x = 1,217,918,585.52
  5. Step 5: Solve for x
    x = 1,217,918,585.52/39,979.05
  6. Step 6: Final answer
    x = 30,463.92

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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.