Home / 15,595.11-21,521.16-8,521.54

Finding the Fourth Proportional to 15,595.11, 21,521.16 and 8,521.54

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Solution

The fourth proportional to 15,595.11, 21,521.16 and 8,521.54 is: 11,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.11 : 21,521.16 = 8,521.54 : x
  2. Step 2: Convert to fraction form
    15,595.11/21,521.16 = 8,521.54/x
  3. Step 3: Cross multiply
    15,595.11x = 21,521.16 × 8,521.54
  4. Step 4: Simplify right side
    15,595.11x = 183,393,371.98
  5. Step 5: Solve for x
    x = 183,393,371.98/15,595.11
  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.