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Finding the Fourth Proportional to 30,023.88, 41,389.02 and 21,044.28

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Solution

The fourth proportional to 30,023.88, 41,389.02 and 21,044.28 is: 29,010.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,023.88 : 41,389.02 = 21,044.28 : x
  2. Step 2: Convert to fraction form
    30,023.88/41,389.02 = 21,044.28/x
  3. Step 3: Cross multiply
    30,023.88x = 41,389.02 × 21,044.28
  4. Step 4: Simplify right side
    30,023.88x = 871,002,125.81
  5. Step 5: Solve for x
    x = 871,002,125.81/30,023.88
  6. Step 6: Final answer
    x = 29,010.31

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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.