Home / 27,915.75-38,525.67-15,816.12

Finding the Fourth Proportional to 27,915.75, 38,525.67 and 15,816.12

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Solution

The fourth proportional to 27,915.75, 38,525.67 and 15,816.12 is: 21,827.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.75 : 38,525.67 = 15,816.12 : x
  2. Step 2: Convert to fraction form
    27,915.75/38,525.67 = 15,816.12/x
  3. Step 3: Cross multiply
    27,915.75x = 38,525.67 × 15,816.12
  4. Step 4: Simplify right side
    27,915.75x = 609,326,619.80
  5. Step 5: Solve for x
    x = 609,326,619.80/27,915.75
  6. Step 6: Final answer
    x = 21,827.34

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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.