Home / 9,621-13,276.72-5,428.92

Finding the Fourth Proportional to 9,621, 13,276.72 and 5,428.92

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Solution

The fourth proportional to 9,621, 13,276.72 and 5,428.92 is: 7,491.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621 : 13,276.72 = 5,428.92 : x
  2. Step 2: Convert to fraction form
    9,621/13,276.72 = 5,428.92/x
  3. Step 3: Cross multiply
    9,621x = 13,276.72 × 5,428.92
  4. Step 4: Simplify right side
    9,621x = 72,078,250.74
  5. Step 5: Solve for x
    x = 72,078,250.74/9,621
  6. Step 6: Final answer
    x = 7,491.76

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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.