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Finding the Fourth Proportional to 12,959.21, 17,883 and 7,294.21

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Solution

The fourth proportional to 12,959.21, 17,883 and 7,294.21 is: 10,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.21 : 17,883 = 7,294.21 : x
  2. Step 2: Convert to fraction form
    12,959.21/17,883 = 7,294.21/x
  3. Step 3: Cross multiply
    12,959.21x = 17,883 × 7,294.21
  4. Step 4: Simplify right side
    12,959.21x = 130,442,312.72
  5. Step 5: Solve for x
    x = 130,442,312.72/12,959.21
  6. Step 6: Final answer
    x = 10,065.60

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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.