Home / 15,844.93-21,868.31-9,129.26

Finding the Fourth Proportional to 15,844.93, 21,868.31 and 9,129.26

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Solution

The fourth proportional to 15,844.93, 21,868.31 and 9,129.26 is: 12,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.93 : 21,868.31 = 9,129.26 : x
  2. Step 2: Convert to fraction form
    15,844.93/21,868.31 = 9,129.26/x
  3. Step 3: Cross multiply
    15,844.93x = 21,868.31 × 9,129.26
  4. Step 4: Simplify right side
    15,844.93x = 199,641,487.75
  5. Step 5: Solve for x
    x = 199,641,487.75/15,844.93
  6. Step 6: Final answer
    x = 12,599.71

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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.