Home / 39,864.93-55,013.46-21,959.91

Finding the Fourth Proportional to 39,864.93, 55,013.46 and 21,959.91

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Solution

The fourth proportional to 39,864.93, 55,013.46 and 21,959.91 is: 30,304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,864.93 : 55,013.46 = 21,959.91 : x
  2. Step 2: Convert to fraction form
    39,864.93/55,013.46 = 21,959.91/x
  3. Step 3: Cross multiply
    39,864.93x = 55,013.46 × 21,959.91
  4. Step 4: Simplify right side
    39,864.93x = 1,208,090,630.39
  5. Step 5: Solve for x
    x = 1,208,090,630.39/39,864.93
  6. Step 6: Final answer
    x = 30,304.60

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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.