Home / 15,571.80-21,489.57-8,498.88

Finding the Fourth Proportional to 15,571.80, 21,489.57 and 8,498.88

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Solution

The fourth proportional to 15,571.80, 21,489.57 and 8,498.88 is: 11,728.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.80 : 21,489.57 = 8,498.88 : x
  2. Step 2: Convert to fraction form
    15,571.80/21,489.57 = 8,498.88/x
  3. Step 3: Cross multiply
    15,571.80x = 21,489.57 × 8,498.88
  4. Step 4: Simplify right side
    15,571.80x = 182,637,276.68
  5. Step 5: Solve for x
    x = 182,637,276.68/15,571.80
  6. Step 6: Final answer
    x = 11,728.72

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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.