Home / 21,891.18-30,222.27-14,460.78

Finding the Fourth Proportional to 21,891.18, 30,222.27 and 14,460.78

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Solution

The fourth proportional to 21,891.18, 30,222.27 and 14,460.78 is: 19,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.18 : 30,222.27 = 14,460.78 : x
  2. Step 2: Convert to fraction form
    21,891.18/30,222.27 = 14,460.78/x
  3. Step 3: Cross multiply
    21,891.18x = 30,222.27 × 14,460.78
  4. Step 4: Simplify right side
    21,891.18x = 437,037,597.57
  5. Step 5: Solve for x
    x = 437,037,597.57/21,891.18
  6. Step 6: Final answer
    x = 19,964.10

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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.