Home / 15,746.88-21,731.04-8,673.69

Finding the Fourth Proportional to 15,746.88, 21,731.04 and 8,673.69

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Solution

The fourth proportional to 15,746.88, 21,731.04 and 8,673.69 is: 11,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.88 : 21,731.04 = 8,673.69 : x
  2. Step 2: Convert to fraction form
    15,746.88/21,731.04 = 8,673.69/x
  3. Step 3: Cross multiply
    15,746.88x = 21,731.04 × 8,673.69
  4. Step 4: Simplify right side
    15,746.88x = 188,488,304.34
  5. Step 5: Solve for x
    x = 188,488,304.34/15,746.88
  6. Step 6: Final answer
    x = 11,969.88

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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.