Home / 12,117.12-16,721.60-6,811.95

Finding the Fourth Proportional to 12,117.12, 16,721.60 and 6,811.95

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Solution

The fourth proportional to 12,117.12, 16,721.60 and 6,811.95 is: 9,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.12 : 16,721.60 = 6,811.95 : x
  2. Step 2: Convert to fraction form
    12,117.12/16,721.60 = 6,811.95/x
  3. Step 3: Cross multiply
    12,117.12x = 16,721.60 × 6,811.95
  4. Step 4: Simplify right side
    12,117.12x = 113,906,703.12
  5. Step 5: Solve for x
    x = 113,906,703.12/12,117.12
  6. Step 6: Final answer
    x = 9,400.48

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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.