Home / 27,641.52-38,146.89-20,915.49

Finding the Fourth Proportional to 27,641.52, 38,146.89 and 20,915.49

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Solution

The fourth proportional to 27,641.52, 38,146.89 and 20,915.49 is: 28,864.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,641.52 : 38,146.89 = 20,915.49 : x
  2. Step 2: Convert to fraction form
    27,641.52/38,146.89 = 20,915.49/x
  3. Step 3: Cross multiply
    27,641.52x = 38,146.89 × 20,915.49
  4. Step 4: Simplify right side
    27,641.52x = 797,860,896.33
  5. Step 5: Solve for x
    x = 797,860,896.33/27,641.52
  6. Step 6: Final answer
    x = 28,864.58

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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.