Home / 13,166.65-18,171.58-8,699.70

Finding the Fourth Proportional to 13,166.65, 18,171.58 and 8,699.70

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Solution

The fourth proportional to 13,166.65, 18,171.58 and 8,699.70 is: 12,006.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.65 : 18,171.58 = 8,699.70 : x
  2. Step 2: Convert to fraction form
    13,166.65/18,171.58 = 8,699.70/x
  3. Step 3: Cross multiply
    13,166.65x = 18,171.58 × 8,699.70
  4. Step 4: Simplify right side
    13,166.65x = 158,087,345.00
  5. Step 5: Solve for x
    x = 158,087,345.00/13,166.65
  6. Step 6: Final answer
    x = 12,006.65

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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.