Home / 12,357.10-18,531.30-3,590.20

Finding the Fourth Proportional to 12,357.10, 18,531.30 and 3,590.20

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Solution

The fourth proportional to 12,357.10, 18,531.30 and 3,590.20 is: 5,384.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.10 : 18,531.30 = 3,590.20 : x
  2. Step 2: Convert to fraction form
    12,357.10/18,531.30 = 3,590.20/x
  3. Step 3: Cross multiply
    12,357.10x = 18,531.30 × 3,590.20
  4. Step 4: Simplify right side
    12,357.10x = 66,531,073.26
  5. Step 5: Solve for x
    x = 66,531,073.26/12,357.10
  6. Step 6: Final answer
    x = 5,384.04

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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.