Home / 21,436.35-32,155.79-8,288.79

Finding the Fourth Proportional to 21,436.35, 32,155.79 and 8,288.79

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Solution

The fourth proportional to 21,436.35, 32,155.79 and 8,288.79 is: 12,433.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.35 : 32,155.79 = 8,288.79 : x
  2. Step 2: Convert to fraction form
    21,436.35/32,155.79 = 8,288.79/x
  3. Step 3: Cross multiply
    21,436.35x = 32,155.79 × 8,288.79
  4. Step 4: Simplify right side
    21,436.35x = 266,532,549.15
  5. Step 5: Solve for x
    x = 266,532,549.15/21,436.35
  6. Step 6: Final answer
    x = 12,433.67

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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.