Home / 15,327.84-21,151.98-8,521.68

Finding the Fourth Proportional to 15,327.84, 21,151.98 and 8,521.68

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Solution

The fourth proportional to 15,327.84, 21,151.98 and 8,521.68 is: 11,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.84 : 21,151.98 = 8,521.68 : x
  2. Step 2: Convert to fraction form
    15,327.84/21,151.98 = 8,521.68/x
  3. Step 3: Cross multiply
    15,327.84x = 21,151.98 × 8,521.68
  4. Step 4: Simplify right side
    15,327.84x = 180,250,404.93
  5. Step 5: Solve for x
    x = 180,250,404.93/15,327.84
  6. Step 6: Final answer
    x = 11,759.67

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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.