Home / 15,909.16-21,955.31-8,835.54

Finding the Fourth Proportional to 15,909.16, 21,955.31 and 8,835.54

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Solution

The fourth proportional to 15,909.16, 21,955.31 and 8,835.54 is: 12,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.16 : 21,955.31 = 8,835.54 : x
  2. Step 2: Convert to fraction form
    15,909.16/21,955.31 = 8,835.54/x
  3. Step 3: Cross multiply
    15,909.16x = 21,955.31 × 8,835.54
  4. Step 4: Simplify right side
    15,909.16x = 193,987,019.72
  5. Step 5: Solve for x
    x = 193,987,019.72/15,909.16
  6. Step 6: Final answer
    x = 12,193.42

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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.