Home / 28,103.95-42,158.31-11,465.11

Finding the Fourth Proportional to 28,103.95, 42,158.31 and 11,465.11

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Solution

The fourth proportional to 28,103.95, 42,158.31 and 11,465.11 is: 17,198.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.95 : 42,158.31 = 11,465.11 : x
  2. Step 2: Convert to fraction form
    28,103.95/42,158.31 = 11,465.11/x
  3. Step 3: Cross multiply
    28,103.95x = 42,158.31 × 11,465.11
  4. Step 4: Simplify right side
    28,103.95x = 483,349,661.56
  5. Step 5: Solve for x
    x = 483,349,661.56/28,103.95
  6. Step 6: Final answer
    x = 17,198.64

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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.