Home / 21,223.59-29,289.17-12,270.30

Finding the Fourth Proportional to 21,223.59, 29,289.17 and 12,270.30

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Solution

The fourth proportional to 21,223.59, 29,289.17 and 12,270.30 is: 16,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.59 : 29,289.17 = 12,270.30 : x
  2. Step 2: Convert to fraction form
    21,223.59/29,289.17 = 12,270.30/x
  3. Step 3: Cross multiply
    21,223.59x = 29,289.17 × 12,270.30
  4. Step 4: Simplify right side
    21,223.59x = 359,386,902.65
  5. Step 5: Solve for x
    x = 359,386,902.65/21,223.59
  6. Step 6: Final answer
    x = 16,933.37

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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.