Home / 12,109.50-18,159.39-5,864.40

Finding the Fourth Proportional to 12,109.50, 18,159.39 and 5,864.40

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Solution

The fourth proportional to 12,109.50, 18,159.39 and 5,864.40 is: 8,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.50 : 18,159.39 = 5,864.40 : x
  2. Step 2: Convert to fraction form
    12,109.50/18,159.39 = 5,864.40/x
  3. Step 3: Cross multiply
    12,109.50x = 18,159.39 × 5,864.40
  4. Step 4: Simplify right side
    12,109.50x = 106,493,926.72
  5. Step 5: Solve for x
    x = 106,493,926.72/12,109.50
  6. Step 6: Final answer
    x = 8,794.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.