Home / 42,172.12-63,269.16-12,589.97

Finding the Fourth Proportional to 42,172.12, 63,269.16 and 12,589.97

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Solution

The fourth proportional to 42,172.12, 63,269.16 and 12,589.97 is: 18,888.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,172.12 : 63,269.16 = 12,589.97 : x
  2. Step 2: Convert to fraction form
    42,172.12/63,269.16 = 12,589.97/x
  3. Step 3: Cross multiply
    42,172.12x = 63,269.16 × 12,589.97
  4. Step 4: Simplify right side
    42,172.12x = 796,556,826.33
  5. Step 5: Solve for x
    x = 796,556,826.33/42,172.12
  6. Step 6: Final answer
    x = 18,888.23

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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.