Home / 21,869.06-30,174.10-12,442.82

Finding the Fourth Proportional to 21,869.06, 30,174.10 and 12,442.82

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Solution

The fourth proportional to 21,869.06, 30,174.10 and 12,442.82 is: 17,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.06 : 30,174.10 = 12,442.82 : x
  2. Step 2: Convert to fraction form
    21,869.06/30,174.10 = 12,442.82/x
  3. Step 3: Cross multiply
    21,869.06x = 30,174.10 × 12,442.82
  4. Step 4: Simplify right side
    21,869.06x = 375,450,894.96
  5. Step 5: Solve for x
    x = 375,450,894.96/21,869.06
  6. Step 6: Final answer
    x = 17,168.13

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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.