Home / 12,398.89-18,574.88-9,611.91

Finding the Fourth Proportional to 12,398.89, 18,574.88 and 9,611.91

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Solution

The fourth proportional to 12,398.89, 18,574.88 and 9,611.91 is: 14,399.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.89 : 18,574.88 = 9,611.91 : x
  2. Step 2: Convert to fraction form
    12,398.89/18,574.88 = 9,611.91/x
  3. Step 3: Cross multiply
    12,398.89x = 18,574.88 × 9,611.91
  4. Step 4: Simplify right side
    12,398.89x = 178,540,074.82
  5. Step 5: Solve for x
    x = 178,540,074.82/12,398.89
  6. Step 6: Final answer
    x = 14,399.68

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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.