Home / 21,868.46-30,170.75-14,318.94

Finding the Fourth Proportional to 21,868.46, 30,170.75 and 14,318.94

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Solution

The fourth proportional to 21,868.46, 30,170.75 and 14,318.94 is: 19,755.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.46 : 30,170.75 = 14,318.94 : x
  2. Step 2: Convert to fraction form
    21,868.46/30,170.75 = 14,318.94/x
  3. Step 3: Cross multiply
    21,868.46x = 30,170.75 × 14,318.94
  4. Step 4: Simplify right side
    21,868.46x = 432,013,200.55
  5. Step 5: Solve for x
    x = 432,013,200.55/21,868.46
  6. Step 6: Final answer
    x = 19,755.08

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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.