Home / 19,521.22-29,269.95-7,660.78

Finding the Fourth Proportional to 19,521.22, 29,269.95 and 7,660.78

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Solution

The fourth proportional to 19,521.22, 29,269.95 and 7,660.78 is: 11,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,521.22 : 29,269.95 = 7,660.78 : x
  2. Step 2: Convert to fraction form
    19,521.22/29,269.95 = 7,660.78/x
  3. Step 3: Cross multiply
    19,521.22x = 29,269.95 × 7,660.78
  4. Step 4: Simplify right side
    19,521.22x = 224,230,647.56
  5. Step 5: Solve for x
    x = 224,230,647.56/19,521.22
  6. Step 6: Final answer
    x = 11,486.51

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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.