Home / 14,391.95-19,821.17-12,401.78

Finding the Fourth Proportional to 14,391.95, 19,821.17 and 12,401.78

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Solution

The fourth proportional to 14,391.95, 19,821.17 and 12,401.78 is: 17,080.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.95 : 19,821.17 = 12,401.78 : x
  2. Step 2: Convert to fraction form
    14,391.95/19,821.17 = 12,401.78/x
  3. Step 3: Cross multiply
    14,391.95x = 19,821.17 × 12,401.78
  4. Step 4: Simplify right side
    14,391.95x = 245,817,721.58
  5. Step 5: Solve for x
    x = 245,817,721.58/14,391.95
  6. Step 6: Final answer
    x = 17,080.23

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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.