Home / 9,991.23-13,787.66-5,514.99

Finding the Fourth Proportional to 9,991.23, 13,787.66 and 5,514.99

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Solution

The fourth proportional to 9,991.23, 13,787.66 and 5,514.99 is: 7,610.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.23 : 13,787.66 = 5,514.99 : x
  2. Step 2: Convert to fraction form
    9,991.23/13,787.66 = 5,514.99/x
  3. Step 3: Cross multiply
    9,991.23x = 13,787.66 × 5,514.99
  4. Step 4: Simplify right side
    9,991.23x = 76,038,779.45
  5. Step 5: Solve for x
    x = 76,038,779.45/9,991.23
  6. Step 6: Final answer
    x = 7,610.55

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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.