Home / 39,888.36-55,046.52-21,983.13

Finding the Fourth Proportional to 39,888.36, 55,046.52 and 21,983.13

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Solution

The fourth proportional to 39,888.36, 55,046.52 and 21,983.13 is: 30,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.36 : 55,046.52 = 21,983.13 : x
  2. Step 2: Convert to fraction form
    39,888.36/55,046.52 = 21,983.13/x
  3. Step 3: Cross multiply
    39,888.36x = 55,046.52 × 21,983.13
  4. Step 4: Simplify right side
    39,888.36x = 1,210,094,805.21
  5. Step 5: Solve for x
    x = 1,210,094,805.21/39,888.36
  6. Step 6: Final answer
    x = 30,337.04

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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.