Home / 13,717.15-18,930.61-8,341.68

Finding the Fourth Proportional to 13,717.15, 18,930.61 and 8,341.68

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Solution

The fourth proportional to 13,717.15, 18,930.61 and 8,341.68 is: 11,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.15 : 18,930.61 = 8,341.68 : x
  2. Step 2: Convert to fraction form
    13,717.15/18,930.61 = 8,341.68/x
  3. Step 3: Cross multiply
    13,717.15x = 18,930.61 × 8,341.68
  4. Step 4: Simplify right side
    13,717.15x = 157,913,172.24
  5. Step 5: Solve for x
    x = 157,913,172.24/13,717.15
  6. Step 6: Final answer
    x = 11,512.10

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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.