Home / 12,933.50-19,343.57-11,987.70

Finding the Fourth Proportional to 12,933.50, 19,343.57 and 11,987.70

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Solution

The fourth proportional to 12,933.50, 19,343.57 and 11,987.70 is: 17,929.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,933.50 : 19,343.57 = 11,987.70 : x
  2. Step 2: Convert to fraction form
    12,933.50/19,343.57 = 11,987.70/x
  3. Step 3: Cross multiply
    12,933.50x = 19,343.57 × 11,987.70
  4. Step 4: Simplify right side
    12,933.50x = 231,884,854.15
  5. Step 5: Solve for x
    x = 231,884,854.15/12,933.50
  6. Step 6: Final answer
    x = 17,929.02

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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.