Home / 12,428.86-18,643.19-5,033.20

Finding the Fourth Proportional to 12,428.86, 18,643.19 and 5,033.20

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Solution

The fourth proportional to 12,428.86, 18,643.19 and 5,033.20 is: 7,549.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.86 : 18,643.19 = 5,033.20 : x
  2. Step 2: Convert to fraction form
    12,428.86/18,643.19 = 5,033.20/x
  3. Step 3: Cross multiply
    12,428.86x = 18,643.19 × 5,033.20
  4. Step 4: Simplify right side
    12,428.86x = 93,834,903.91
  5. Step 5: Solve for x
    x = 93,834,903.91/12,428.86
  6. Step 6: Final answer
    x = 7,549.76

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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.