Home / 12,117.16-16,721.50-6,811.98

Finding the Fourth Proportional to 12,117.16, 16,721.50 and 6,811.98

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Solution

The fourth proportional to 12,117.16, 16,721.50 and 6,811.98 is: 9,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.16 : 16,721.50 = 6,811.98 : x
  2. Step 2: Convert to fraction form
    12,117.16/16,721.50 = 6,811.98/x
  3. Step 3: Cross multiply
    12,117.16x = 16,721.50 × 6,811.98
  4. Step 4: Simplify right side
    12,117.16x = 113,906,489.51
  5. Step 5: Solve for x
    x = 113,906,489.51/12,117.16
  6. Step 6: Final answer
    x = 9,400.43

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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.