Home / 15,924.48-21,976.80-8,851.68

Finding the Fourth Proportional to 15,924.48, 21,976.80 and 8,851.68

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Solution

The fourth proportional to 15,924.48, 21,976.80 and 8,851.68 is: 12,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,924.48 : 21,976.80 = 8,851.68 : x
  2. Step 2: Convert to fraction form
    15,924.48/21,976.80 = 8,851.68/x
  3. Step 3: Cross multiply
    15,924.48x = 21,976.80 × 8,851.68
  4. Step 4: Simplify right side
    15,924.48x = 194,531,601.02
  5. Step 5: Solve for x
    x = 194,531,601.02/15,924.48
  6. Step 6: Final answer
    x = 12,215.88

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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.