Home / 9,905.17-13,669.24-5,428.82

Finding the Fourth Proportional to 9,905.17, 13,669.24 and 5,428.82

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Solution

The fourth proportional to 9,905.17, 13,669.24 and 5,428.82 is: 7,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.17 : 13,669.24 = 5,428.82 : x
  2. Step 2: Convert to fraction form
    9,905.17/13,669.24 = 5,428.82/x
  3. Step 3: Cross multiply
    9,905.17x = 13,669.24 × 5,428.82
  4. Step 4: Simplify right side
    9,905.17x = 74,207,843.50
  5. Step 5: Solve for x
    x = 74,207,843.50/9,905.17
  6. Step 6: Final answer
    x = 7,491.83

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1.5x scale

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.