Home / 15,178.11-20,933.42-12,746.10

Finding the Fourth Proportional to 15,178.11, 20,933.42 and 12,746.10

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Solution

The fourth proportional to 15,178.11, 20,933.42 and 12,746.10 is: 17,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,178.11 : 20,933.42 = 12,746.10 : x
  2. Step 2: Convert to fraction form
    15,178.11/20,933.42 = 12,746.10/x
  3. Step 3: Cross multiply
    15,178.11x = 20,933.42 × 12,746.10
  4. Step 4: Simplify right side
    15,178.11x = 266,819,400.93
  5. Step 5: Solve for x
    x = 266,819,400.93/15,178.11
  6. Step 6: Final answer
    x = 17,579.22

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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.