Home / 21,731.44-29,988.48-12,300.52

Finding the Fourth Proportional to 21,731.44, 29,988.48 and 12,300.52

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Solution

The fourth proportional to 21,731.44, 29,988.48 and 12,300.52 is: 16,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,731.44 : 29,988.48 = 12,300.52 : x
  2. Step 2: Convert to fraction form
    21,731.44/29,988.48 = 12,300.52/x
  3. Step 3: Cross multiply
    21,731.44x = 29,988.48 × 12,300.52
  4. Step 4: Simplify right side
    21,731.44x = 368,873,898.01
  5. Step 5: Solve for x
    x = 368,873,898.01/21,731.44
  6. Step 6: Final answer
    x = 16,974.20

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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.