Home / 21,233.72-29,284.86-15,940.28

Finding the Fourth Proportional to 21,233.72, 29,284.86 and 15,940.28

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Solution

The fourth proportional to 21,233.72, 29,284.86 and 15,940.28 is: 21,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.72 : 29,284.86 = 15,940.28 : x
  2. Step 2: Convert to fraction form
    21,233.72/29,284.86 = 15,940.28/x
  3. Step 3: Cross multiply
    21,233.72x = 29,284.86 × 15,940.28
  4. Step 4: Simplify right side
    21,233.72x = 466,808,868.16
  5. Step 5: Solve for x
    x = 466,808,868.16/21,233.72
  6. Step 6: Final answer
    x = 21,984.32

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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.