Home / 15,089.89-20,823.65-8,375.34

Finding the Fourth Proportional to 15,089.89, 20,823.65 and 8,375.34

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Solution

The fourth proportional to 15,089.89, 20,823.65 and 8,375.34 is: 11,557.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.89 : 20,823.65 = 8,375.34 : x
  2. Step 2: Convert to fraction form
    15,089.89/20,823.65 = 8,375.34/x
  3. Step 3: Cross multiply
    15,089.89x = 20,823.65 × 8,375.34
  4. Step 4: Simplify right side
    15,089.89x = 174,405,148.79
  5. Step 5: Solve for x
    x = 174,405,148.79/15,089.89
  6. Step 6: Final answer
    x = 11,557.75

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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.