Home / 21,869.92-30,179.95-12,437.88

Finding the Fourth Proportional to 21,869.92, 30,179.95 and 12,437.88

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Solution

The fourth proportional to 21,869.92, 30,179.95 and 12,437.88 is: 17,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.92 : 30,179.95 = 12,437.88 : x
  2. Step 2: Convert to fraction form
    21,869.92/30,179.95 = 12,437.88/x
  3. Step 3: Cross multiply
    21,869.92x = 30,179.95 × 12,437.88
  4. Step 4: Simplify right side
    21,869.92x = 375,374,596.51
  5. Step 5: Solve for x
    x = 375,374,596.51/21,869.92
  6. Step 6: Final answer
    x = 17,163.97

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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.