Home / 27,851.85-38,435.72-15,915.62

Finding the Fourth Proportional to 27,851.85, 38,435.72 and 15,915.62

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Solution

The fourth proportional to 27,851.85, 38,435.72 and 15,915.62 is: 21,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,851.85 : 38,435.72 = 15,915.62 : x
  2. Step 2: Convert to fraction form
    27,851.85/38,435.72 = 15,915.62/x
  3. Step 3: Cross multiply
    27,851.85x = 38,435.72 × 15,915.62
  4. Step 4: Simplify right side
    27,851.85x = 611,728,330.46
  5. Step 5: Solve for x
    x = 611,728,330.46/27,851.85
  6. Step 6: Final answer
    x = 21,963.65

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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.