Home / 27,785.30-38,347.36-15,845.90

Finding the Fourth Proportional to 27,785.30, 38,347.36 and 15,845.90

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Solution

The fourth proportional to 27,785.30, 38,347.36 and 15,845.90 is: 21,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.30 : 38,347.36 = 15,845.90 : x
  2. Step 2: Convert to fraction form
    27,785.30/38,347.36 = 15,845.90/x
  3. Step 3: Cross multiply
    27,785.30x = 38,347.36 × 15,845.90
  4. Step 4: Simplify right side
    27,785.30x = 607,648,200.47
  5. Step 5: Solve for x
    x = 607,648,200.47/27,785.30
  6. Step 6: Final answer
    x = 21,869.42

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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.