Home / 12,387.30-17,094.12-6,721.80

Finding the Fourth Proportional to 12,387.30, 17,094.12 and 6,721.80

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Solution

The fourth proportional to 12,387.30, 17,094.12 and 6,721.80 is: 9,275.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.30 : 17,094.12 = 6,721.80 : x
  2. Step 2: Convert to fraction form
    12,387.30/17,094.12 = 6,721.80/x
  3. Step 3: Cross multiply
    12,387.30x = 17,094.12 × 6,721.80
  4. Step 4: Simplify right side
    12,387.30x = 114,903,255.82
  5. Step 5: Solve for x
    x = 114,903,255.82/12,387.30
  6. Step 6: Final answer
    x = 9,275.89

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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.