Home / 21,421.45-32,144.33-8,274.75

Finding the Fourth Proportional to 21,421.45, 32,144.33 and 8,274.75

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Solution

The fourth proportional to 21,421.45, 32,144.33 and 8,274.75 is: 12,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.45 : 32,144.33 = 8,274.75 : x
  2. Step 2: Convert to fraction form
    21,421.45/32,144.33 = 8,274.75/x
  3. Step 3: Cross multiply
    21,421.45x = 32,144.33 × 8,274.75
  4. Step 4: Simplify right side
    21,421.45x = 265,986,294.67
  5. Step 5: Solve for x
    x = 265,986,294.67/21,421.45
  6. Step 6: Final answer
    x = 12,416.82

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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.