Home / 15,939.37-21,999-9,223.84

Finding the Fourth Proportional to 15,939.37, 21,999 and 9,223.84

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Solution

The fourth proportional to 15,939.37, 21,999 and 9,223.84 is: 12,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.37 : 21,999 = 9,223.84 : x
  2. Step 2: Convert to fraction form
    15,939.37/21,999 = 9,223.84/x
  3. Step 3: Cross multiply
    15,939.37x = 21,999 × 9,223.84
  4. Step 4: Simplify right side
    15,939.37x = 202,915,256.16
  5. Step 5: Solve for x
    x = 202,915,256.16/15,939.37
  6. Step 6: Final answer
    x = 12,730.44

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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.