Home / 15,351.65-21,181.38-11,770.19

Finding the Fourth Proportional to 15,351.65, 21,181.38 and 11,770.19

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Solution

The fourth proportional to 15,351.65, 21,181.38 and 11,770.19 is: 16,239.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.65 : 21,181.38 = 11,770.19 : x
  2. Step 2: Convert to fraction form
    15,351.65/21,181.38 = 11,770.19/x
  3. Step 3: Cross multiply
    15,351.65x = 21,181.38 × 11,770.19
  4. Step 4: Simplify right side
    15,351.65x = 249,308,761.16
  5. Step 5: Solve for x
    x = 249,308,761.16/15,351.65
  6. Step 6: Final answer
    x = 16,239.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.