Home / 27,866.01-38,455.10-15,929.61

Finding the Fourth Proportional to 27,866.01, 38,455.10 and 15,929.61

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Solution

The fourth proportional to 27,866.01, 38,455.10 and 15,929.61 is: 21,982.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,866.01 : 38,455.10 = 15,929.61 : x
  2. Step 2: Convert to fraction form
    27,866.01/38,455.10 = 15,929.61/x
  3. Step 3: Cross multiply
    27,866.01x = 38,455.10 × 15,929.61
  4. Step 4: Simplify right side
    27,866.01x = 612,574,473.59
  5. Step 5: Solve for x
    x = 612,574,473.59/27,866.01
  6. Step 6: Final answer
    x = 21,982.86

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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.