Home / 12,643.28-18,966.08-3,283.28

Finding the Fourth Proportional to 12,643.28, 18,966.08 and 3,283.28

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Solution

The fourth proportional to 12,643.28, 18,966.08 and 3,283.28 is: 4,925.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.28 : 18,966.08 = 3,283.28 : x
  2. Step 2: Convert to fraction form
    12,643.28/18,966.08 = 3,283.28/x
  3. Step 3: Cross multiply
    12,643.28x = 18,966.08 × 3,283.28
  4. Step 4: Simplify right side
    12,643.28x = 62,270,951.14
  5. Step 5: Solve for x
    x = 62,270,951.14/12,643.28
  6. Step 6: Final answer
    x = 4,925.22

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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.