Home / 15,768.27-21,756.33-10,390.11

Finding the Fourth Proportional to 15,768.27, 21,756.33 and 10,390.11

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Solution

The fourth proportional to 15,768.27, 21,756.33 and 10,390.11 is: 14,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.27 : 21,756.33 = 10,390.11 : x
  2. Step 2: Convert to fraction form
    15,768.27/21,756.33 = 10,390.11/x
  3. Step 3: Cross multiply
    15,768.27x = 21,756.33 × 10,390.11
  4. Step 4: Simplify right side
    15,768.27x = 226,050,661.90
  5. Step 5: Solve for x
    x = 226,050,661.90/15,768.27
  6. Step 6: Final answer
    x = 14,335.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.