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Finding the Fourth Proportional to 37,311.78, 51,489.90 and 21,401.76

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Solution

The fourth proportional to 37,311.78, 51,489.90 and 21,401.76 is: 29,534.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,311.78 : 51,489.90 = 21,401.76 : x
  2. Step 2: Convert to fraction form
    37,311.78/51,489.90 = 21,401.76/x
  3. Step 3: Cross multiply
    37,311.78x = 51,489.90 × 21,401.76
  4. Step 4: Simplify right side
    37,311.78x = 1,101,974,482.22
  5. Step 5: Solve for x
    x = 1,101,974,482.22/37,311.78
  6. Step 6: Final answer
    x = 29,534.22

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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.