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Finding the Fourth Proportional to 26,398.88, 36,430.46 and 15,220.88

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Solution

The fourth proportional to 26,398.88, 36,430.46 and 15,220.88 is: 21,004.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,398.88 : 36,430.46 = 15,220.88 : x
  2. Step 2: Convert to fraction form
    26,398.88/36,430.46 = 15,220.88/x
  3. Step 3: Cross multiply
    26,398.88x = 36,430.46 × 15,220.88
  4. Step 4: Simplify right side
    26,398.88x = 554,503,401.75
  5. Step 5: Solve for x
    x = 554,503,401.75/26,398.88
  6. Step 6: Final answer
    x = 21,004.81

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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.