Home / 27,915.53-38,525.82-15,342.71

Finding the Fourth Proportional to 27,915.53, 38,525.82 and 15,342.71

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Solution

The fourth proportional to 27,915.53, 38,525.82 and 15,342.71 is: 21,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.53 : 38,525.82 = 15,342.71 : x
  2. Step 2: Convert to fraction form
    27,915.53/38,525.82 = 15,342.71/x
  3. Step 3: Cross multiply
    27,915.53x = 38,525.82 × 15,342.71
  4. Step 4: Simplify right side
    27,915.53x = 591,090,291.14
  5. Step 5: Solve for x
    x = 591,090,291.14/27,915.53
  6. Step 6: Final answer
    x = 21,174.25

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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.