Home / 14,634.61-20,195.79-7,920.25

Finding the Fourth Proportional to 14,634.61, 20,195.79 and 7,920.25

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Solution

The fourth proportional to 14,634.61, 20,195.79 and 7,920.25 is: 10,929.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,634.61 : 20,195.79 = 7,920.25 : x
  2. Step 2: Convert to fraction form
    14,634.61/20,195.79 = 7,920.25/x
  3. Step 3: Cross multiply
    14,634.61x = 20,195.79 × 7,920.25
  4. Step 4: Simplify right side
    14,634.61x = 159,955,604.77
  5. Step 5: Solve for x
    x = 159,955,604.77/14,634.61
  6. Step 6: Final answer
    x = 10,929.95

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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.