Home / 23,308.40-34,786.51-21,728.30

Finding the Fourth Proportional to 23,308.40, 34,786.51 and 21,728.30

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Solution

The fourth proportional to 23,308.40, 34,786.51 and 21,728.30 is: 32,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,308.40 : 34,786.51 = 21,728.30 : x
  2. Step 2: Convert to fraction form
    23,308.40/34,786.51 = 21,728.30/x
  3. Step 3: Cross multiply
    23,308.40x = 34,786.51 × 21,728.30
  4. Step 4: Simplify right side
    23,308.40x = 755,851,725.23
  5. Step 5: Solve for x
    x = 755,851,725.23/23,308.40
  6. Step 6: Final answer
    x = 32,428.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.