Home / 13,738.61-20,605.61-3,875.58

Finding the Fourth Proportional to 13,738.61, 20,605.61 and 3,875.58

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Solution

The fourth proportional to 13,738.61, 20,605.61 and 3,875.58 is: 5,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.61 : 20,605.61 = 3,875.58 : x
  2. Step 2: Convert to fraction form
    13,738.61/20,605.61 = 3,875.58/x
  3. Step 3: Cross multiply
    13,738.61x = 20,605.61 × 3,875.58
  4. Step 4: Simplify right side
    13,738.61x = 79,858,699.69
  5. Step 5: Solve for x
    x = 79,858,699.69/13,738.61
  6. Step 6: Final answer
    x = 5,812.72

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1.5x scale

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.