Home / 39,863.13-55,009.10-21,957.75

Finding the Fourth Proportional to 39,863.13, 55,009.10 and 21,957.75

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Solution

The fourth proportional to 39,863.13, 55,009.10 and 21,957.75 is: 30,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.13 : 55,009.10 = 21,957.75 : x
  2. Step 2: Convert to fraction form
    39,863.13/55,009.10 = 21,957.75/x
  3. Step 3: Cross multiply
    39,863.13x = 55,009.10 × 21,957.75
  4. Step 4: Simplify right side
    39,863.13x = 1,207,875,955.74
  5. Step 5: Solve for x
    x = 1,207,875,955.74/39,863.13
  6. Step 6: Final answer
    x = 30,300.58

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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.