Home / 13,179.04-18,191.30-8,706.76

Finding the Fourth Proportional to 13,179.04, 18,191.30 and 8,706.76

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Solution

The fourth proportional to 13,179.04, 18,191.30 and 8,706.76 is: 12,018.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.04 : 18,191.30 = 8,706.76 : x
  2. Step 2: Convert to fraction form
    13,179.04/18,191.30 = 8,706.76/x
  3. Step 3: Cross multiply
    13,179.04x = 18,191.30 × 8,706.76
  4. Step 4: Simplify right side
    13,179.04x = 158,387,283.19
  5. Step 5: Solve for x
    x = 158,387,283.19/13,179.04
  6. Step 6: Final answer
    x = 12,018.12

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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.