Home / 42,285.96-63,432.68-11,121.21

Finding the Fourth Proportional to 42,285.96, 63,432.68 and 11,121.21

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Solution

The fourth proportional to 42,285.96, 63,432.68 and 11,121.21 is: 16,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,285.96 : 63,432.68 = 11,121.21 : x
  2. Step 2: Convert to fraction form
    42,285.96/63,432.68 = 11,121.21/x
  3. Step 3: Cross multiply
    42,285.96x = 63,432.68 × 11,121.21
  4. Step 4: Simplify right side
    42,285.96x = 705,448,099.54
  5. Step 5: Solve for x
    x = 705,448,099.54/42,285.96
  6. Step 6: Final answer
    x = 16,682.80

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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.