Home / 28,199.24-38,915.22-15,625.16

Finding the Fourth Proportional to 28,199.24, 38,915.22 and 15,625.16

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Solution

The fourth proportional to 28,199.24, 38,915.22 and 15,625.16 is: 21,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.24 : 38,915.22 = 15,625.16 : x
  2. Step 2: Convert to fraction form
    28,199.24/38,915.22 = 15,625.16/x
  3. Step 3: Cross multiply
    28,199.24x = 38,915.22 × 15,625.16
  4. Step 4: Simplify right side
    28,199.24x = 608,056,538.94
  5. Step 5: Solve for x
    x = 608,056,538.94/28,199.24
  6. Step 6: Final answer
    x = 21,562.87

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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.