Home / 21,341.28-29,452.64-11,911.26

Finding the Fourth Proportional to 21,341.28, 29,452.64 and 11,911.26

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Solution

The fourth proportional to 21,341.28, 29,452.64 and 11,911.26 is: 16,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.28 : 29,452.64 = 11,911.26 : x
  2. Step 2: Convert to fraction form
    21,341.28/29,452.64 = 11,911.26/x
  3. Step 3: Cross multiply
    21,341.28x = 29,452.64 × 11,911.26
  4. Step 4: Simplify right side
    21,341.28x = 350,817,993.17
  5. Step 5: Solve for x
    x = 350,817,993.17/21,341.28
  6. Step 6: Final answer
    x = 16,438.47

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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.