Home / 12,117.10-16,720.77-6,812.74

Finding the Fourth Proportional to 12,117.10, 16,720.77 and 6,812.74

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Solution

The fourth proportional to 12,117.10, 16,720.77 and 6,812.74 is: 9,401.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.10 : 16,720.77 = 6,812.74 : x
  2. Step 2: Convert to fraction form
    12,117.10/16,720.77 = 6,812.74/x
  3. Step 3: Cross multiply
    12,117.10x = 16,720.77 × 6,812.74
  4. Step 4: Simplify right side
    12,117.10x = 113,914,258.61
  5. Step 5: Solve for x
    x = 113,914,258.61/12,117.10
  6. Step 6: Final answer
    x = 9,401.12

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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.