Home / 12,117.09-16,721.51-6,811.95

Finding the Fourth Proportional to 12,117.09, 16,721.51 and 6,811.95

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Solution

The fourth proportional to 12,117.09, 16,721.51 and 6,811.95 is: 9,400.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.09 : 16,721.51 = 6,811.95 : x
  2. Step 2: Convert to fraction form
    12,117.09/16,721.51 = 6,811.95/x
  3. Step 3: Cross multiply
    12,117.09x = 16,721.51 × 6,811.95
  4. Step 4: Simplify right side
    12,117.09x = 113,906,055.98
  5. Step 5: Solve for x
    x = 113,906,055.98/12,117.09
  6. Step 6: Final answer
    x = 9,400.45

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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.