Home / 15,323.97-21,139.13-10,289.95

Finding the Fourth Proportional to 15,323.97, 21,139.13 and 10,289.95

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Solution

The fourth proportional to 15,323.97, 21,139.13 and 10,289.95 is: 14,194.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.97 : 21,139.13 = 10,289.95 : x
  2. Step 2: Convert to fraction form
    15,323.97/21,139.13 = 10,289.95/x
  3. Step 3: Cross multiply
    15,323.97x = 21,139.13 × 10,289.95
  4. Step 4: Simplify right side
    15,323.97x = 217,520,563.62
  5. Step 5: Solve for x
    x = 217,520,563.62/15,323.97
  6. Step 6: Final answer
    x = 14,194.79

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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.