Home / 18,967.40-28,429.49-11,854.91

Finding the Fourth Proportional to 18,967.40, 28,429.49 and 11,854.91

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Solution

The fourth proportional to 18,967.40, 28,429.49 and 11,854.91 is: 17,768.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.40 : 28,429.49 = 11,854.91 : x
  2. Step 2: Convert to fraction form
    18,967.40/28,429.49 = 11,854.91/x
  3. Step 3: Cross multiply
    18,967.40x = 28,429.49 × 11,854.91
  4. Step 4: Simplify right side
    18,967.40x = 337,029,146.01
  5. Step 5: Solve for x
    x = 337,029,146.01/18,967.40
  6. Step 6: Final answer
    x = 17,768.86

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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.