Home / 21,864.82-30,172.26-12,432.76

Finding the Fourth Proportional to 21,864.82, 30,172.26 and 12,432.76

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Solution

The fourth proportional to 21,864.82, 30,172.26 and 12,432.76 is: 17,156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.82 : 30,172.26 = 12,432.76 : x
  2. Step 2: Convert to fraction form
    21,864.82/30,172.26 = 12,432.76/x
  3. Step 3: Cross multiply
    21,864.82x = 30,172.26 × 12,432.76
  4. Step 4: Simplify right side
    21,864.82x = 375,124,467.24
  5. Step 5: Solve for x
    x = 375,124,467.24/21,864.82
  6. Step 6: Final answer
    x = 17,156.53

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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.