Home / 15,920.28-21,970.26-8,750.88

Finding the Fourth Proportional to 15,920.28, 21,970.26 and 8,750.88

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Solution

The fourth proportional to 15,920.28, 21,970.26 and 8,750.88 is: 12,076.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.28 : 21,970.26 = 8,750.88 : x
  2. Step 2: Convert to fraction form
    15,920.28/21,970.26 = 8,750.88/x
  3. Step 3: Cross multiply
    15,920.28x = 21,970.26 × 8,750.88
  4. Step 4: Simplify right side
    15,920.28x = 192,259,108.83
  5. Step 5: Solve for x
    x = 192,259,108.83/15,920.28
  6. Step 6: Final answer
    x = 12,076.36

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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.