Home / 35,810.76-53,716.20-12,420.75

Finding the Fourth Proportional to 35,810.76, 53,716.20 and 12,420.75

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Solution

The fourth proportional to 35,810.76, 53,716.20 and 12,420.75 is: 18,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,810.76 : 53,716.20 = 12,420.75 : x
  2. Step 2: Convert to fraction form
    35,810.76/53,716.20 = 12,420.75/x
  3. Step 3: Cross multiply
    35,810.76x = 53,716.20 × 12,420.75
  4. Step 4: Simplify right side
    35,810.76x = 667,195,491.15
  5. Step 5: Solve for x
    x = 667,195,491.15/35,810.76
  6. Step 6: Final answer
    x = 18,631.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.