Home / 13,166.68-18,159.78-8,451.40

Finding the Fourth Proportional to 13,166.68, 18,159.78 and 8,451.40

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Solution

The fourth proportional to 13,166.68, 18,159.78 and 8,451.40 is: 11,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.68 : 18,159.78 = 8,451.40 : x
  2. Step 2: Convert to fraction form
    13,166.68/18,159.78 = 8,451.40/x
  3. Step 3: Cross multiply
    13,166.68x = 18,159.78 × 8,451.40
  4. Step 4: Simplify right side
    13,166.68x = 153,475,564.69
  5. Step 5: Solve for x
    x = 153,475,564.69/13,166.68
  6. Step 6: Final answer
    x = 11,656.36

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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.