Home / 15,825.20-21,836.21-8,750.25

Finding the Fourth Proportional to 15,825.20, 21,836.21 and 8,750.25

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Solution

The fourth proportional to 15,825.20, 21,836.21 and 8,750.25 is: 12,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.20 : 21,836.21 = 8,750.25 : x
  2. Step 2: Convert to fraction form
    15,825.20/21,836.21 = 8,750.25/x
  3. Step 3: Cross multiply
    15,825.20x = 21,836.21 × 8,750.25
  4. Step 4: Simplify right side
    15,825.20x = 191,072,252.80
  5. Step 5: Solve for x
    x = 191,072,252.80/15,825.20
  6. Step 6: Final answer
    x = 12,073.93

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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.