Home / 42,429.87-63,644.82-12,847.65

Finding the Fourth Proportional to 42,429.87, 63,644.82 and 12,847.65

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Solution

The fourth proportional to 42,429.87, 63,644.82 and 12,847.65 is: 19,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,429.87 : 63,644.82 = 12,847.65 : x
  2. Step 2: Convert to fraction form
    42,429.87/63,644.82 = 12,847.65/x
  3. Step 3: Cross multiply
    42,429.87x = 63,644.82 × 12,847.65
  4. Step 4: Simplify right side
    42,429.87x = 817,686,371.67
  5. Step 5: Solve for x
    x = 817,686,371.67/42,429.87
  6. Step 6: Final answer
    x = 19,271.48

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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.