Home / 12,711.12-17,541.12-7,122

Finding the Fourth Proportional to 12,711.12, 17,541.12 and 7,122

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Solution

The fourth proportional to 12,711.12, 17,541.12 and 7,122 is: 9,828.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.12 : 17,541.12 = 7,122 : x
  2. Step 2: Convert to fraction form
    12,711.12/17,541.12 = 7,122/x
  3. Step 3: Cross multiply
    12,711.12x = 17,541.12 × 7,122
  4. Step 4: Simplify right side
    12,711.12x = 124,927,856.64
  5. Step 5: Solve for x
    x = 124,927,856.64/12,711.12
  6. Step 6: Final answer
    x = 9,828.23

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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.