Home / 10,555.11-15,828.71-3,977.73

Finding the Fourth Proportional to 10,555.11, 15,828.71 and 3,977.73

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Solution

The fourth proportional to 10,555.11, 15,828.71 and 3,977.73 is: 5,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.11 : 15,828.71 = 3,977.73 : x
  2. Step 2: Convert to fraction form
    10,555.11/15,828.71 = 3,977.73/x
  3. Step 3: Cross multiply
    10,555.11x = 15,828.71 × 3,977.73
  4. Step 4: Simplify right side
    10,555.11x = 62,962,314.74
  5. Step 5: Solve for x
    x = 62,962,314.74/10,555.11
  6. Step 6: Final answer
    x = 5,965.10

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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.