Home / 15,394.24-21,239.22-9,419.68

Finding the Fourth Proportional to 15,394.24, 21,239.22 and 9,419.68

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Solution

The fourth proportional to 15,394.24, 21,239.22 and 9,419.68 is: 12,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.24 : 21,239.22 = 9,419.68 : x
  2. Step 2: Convert to fraction form
    15,394.24/21,239.22 = 9,419.68/x
  3. Step 3: Cross multiply
    15,394.24x = 21,239.22 × 9,419.68
  4. Step 4: Simplify right side
    15,394.24x = 200,066,655.85
  5. Step 5: Solve for x
    x = 200,066,655.85/15,394.24
  6. Step 6: Final answer
    x = 12,996.20

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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.