Home / 25,320.45-34,943.09-15,894.21

Finding the Fourth Proportional to 25,320.45, 34,943.09 and 15,894.21

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Solution

The fourth proportional to 25,320.45, 34,943.09 and 15,894.21 is: 21,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,320.45 : 34,943.09 = 15,894.21 : x
  2. Step 2: Convert to fraction form
    25,320.45/34,943.09 = 15,894.21/x
  3. Step 3: Cross multiply
    25,320.45x = 34,943.09 × 15,894.21
  4. Step 4: Simplify right side
    25,320.45x = 555,392,731.04
  5. Step 5: Solve for x
    x = 555,392,731.04/25,320.45
  6. Step 6: Final answer
    x = 21,934.55

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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.