Home / 21,900.93-30,223.29-12,469.48

Finding the Fourth Proportional to 21,900.93, 30,223.29 and 12,469.48

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Solution

The fourth proportional to 21,900.93, 30,223.29 and 12,469.48 is: 17,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.93 : 30,223.29 = 12,469.48 : x
  2. Step 2: Convert to fraction form
    21,900.93/30,223.29 = 12,469.48/x
  3. Step 3: Cross multiply
    21,900.93x = 30,223.29 × 12,469.48
  4. Step 4: Simplify right side
    21,900.93x = 376,868,710.19
  5. Step 5: Solve for x
    x = 376,868,710.19/21,900.93
  6. Step 6: Final answer
    x = 17,207.89

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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.