Home / 10,249.80-15,374.70-8,521.80

Finding the Fourth Proportional to 10,249.80, 15,374.70 and 8,521.80

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Solution

The fourth proportional to 10,249.80, 15,374.70 and 8,521.80 is: 12,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,249.80 : 15,374.70 = 8,521.80 : x
  2. Step 2: Convert to fraction form
    10,249.80/15,374.70 = 8,521.80/x
  3. Step 3: Cross multiply
    10,249.80x = 15,374.70 × 8,521.80
  4. Step 4: Simplify right side
    10,249.80x = 131,020,118.46
  5. Step 5: Solve for x
    x = 131,020,118.46/10,249.80
  6. Step 6: Final answer
    x = 12,782.70

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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.