Home / 15,422.88-21,282.54-8,708.76

Finding the Fourth Proportional to 15,422.88, 21,282.54 and 8,708.76

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Solution

The fourth proportional to 15,422.88, 21,282.54 and 8,708.76 is: 12,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.88 : 21,282.54 = 8,708.76 : x
  2. Step 2: Convert to fraction form
    15,422.88/21,282.54 = 8,708.76/x
  3. Step 3: Cross multiply
    15,422.88x = 21,282.54 × 8,708.76
  4. Step 4: Simplify right side
    15,422.88x = 185,344,533.05
  5. Step 5: Solve for x
    x = 185,344,533.05/15,422.88
  6. Step 6: Final answer
    x = 12,017.50

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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.