Home / 27,868.77-38,461.59-15,929.87

Finding the Fourth Proportional to 27,868.77, 38,461.59 and 15,929.87

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Solution

The fourth proportional to 27,868.77, 38,461.59 and 15,929.87 is: 21,984.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,868.77 : 38,461.59 = 15,929.87 : x
  2. Step 2: Convert to fraction form
    27,868.77/38,461.59 = 15,929.87/x
  3. Step 3: Cross multiply
    27,868.77x = 38,461.59 × 15,929.87
  4. Step 4: Simplify right side
    27,868.77x = 612,687,936.39
  5. Step 5: Solve for x
    x = 612,687,936.39/27,868.77
  6. Step 6: Final answer
    x = 21,984.75

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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.