Home / 27,875.97-38,467.98-15,128.55

Finding the Fourth Proportional to 27,875.97, 38,467.98 and 15,128.55

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Solution

The fourth proportional to 27,875.97, 38,467.98 and 15,128.55 is: 20,876.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,875.97 : 38,467.98 = 15,128.55 : x
  2. Step 2: Convert to fraction form
    27,875.97/38,467.98 = 15,128.55/x
  3. Step 3: Cross multiply
    27,875.97x = 38,467.98 × 15,128.55
  4. Step 4: Simplify right side
    27,875.97x = 581,964,758.83
  5. Step 5: Solve for x
    x = 581,964,758.83/27,875.97
  6. Step 6: Final answer
    x = 20,876.93

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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.