Home / 15,223.31-21,004.20-9,255.23

Finding the Fourth Proportional to 15,223.31, 21,004.20 and 9,255.23

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Solution

The fourth proportional to 15,223.31, 21,004.20 and 9,255.23 is: 12,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.31 : 21,004.20 = 9,255.23 : x
  2. Step 2: Convert to fraction form
    15,223.31/21,004.20 = 9,255.23/x
  3. Step 3: Cross multiply
    15,223.31x = 21,004.20 × 9,255.23
  4. Step 4: Simplify right side
    15,223.31x = 194,398,596.95
  5. Step 5: Solve for x
    x = 194,398,596.95/15,223.31
  6. Step 6: Final answer
    x = 12,769.80

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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.