Home / 19,314.78-28,990.89-9,326.57

Finding the Fourth Proportional to 19,314.78, 28,990.89 and 9,326.57

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Solution

The fourth proportional to 19,314.78, 28,990.89 and 9,326.57 is: 13,998.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,314.78 : 28,990.89 = 9,326.57 : x
  2. Step 2: Convert to fraction form
    19,314.78/28,990.89 = 9,326.57/x
  3. Step 3: Cross multiply
    19,314.78x = 28,990.89 × 9,326.57
  4. Step 4: Simplify right side
    19,314.78x = 270,385,419.99
  5. Step 5: Solve for x
    x = 270,385,419.99/19,314.78
  6. Step 6: Final answer
    x = 13,998.89

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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.