Home / 12,157.29-18,239-3,392.19

Finding the Fourth Proportional to 12,157.29, 18,239 and 3,392.19

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Solution

The fourth proportional to 12,157.29, 18,239 and 3,392.19 is: 5,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.29 : 18,239 = 3,392.19 : x
  2. Step 2: Convert to fraction form
    12,157.29/18,239 = 3,392.19/x
  3. Step 3: Cross multiply
    12,157.29x = 18,239 × 3,392.19
  4. Step 4: Simplify right side
    12,157.29x = 61,870,153.41
  5. Step 5: Solve for x
    x = 61,870,153.41/12,157.29
  6. Step 6: Final answer
    x = 5,089.14

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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.