Home / 12,986.10-19,482.16-4,102.31

Finding the Fourth Proportional to 12,986.10, 19,482.16 and 4,102.31

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Solution

The fourth proportional to 12,986.10, 19,482.16 and 4,102.31 is: 6,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.10 : 19,482.16 = 4,102.31 : x
  2. Step 2: Convert to fraction form
    12,986.10/19,482.16 = 4,102.31/x
  3. Step 3: Cross multiply
    12,986.10x = 19,482.16 × 4,102.31
  4. Step 4: Simplify right side
    12,986.10x = 79,921,839.28
  5. Step 5: Solve for x
    x = 79,921,839.28/12,986.10
  6. Step 6: Final answer
    x = 6,154.42

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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.