Home / 14,278.28-21,417.39-3,890

Finding the Fourth Proportional to 14,278.28, 21,417.39 and 3,890

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Solution

The fourth proportional to 14,278.28, 21,417.39 and 3,890 is: 5,834.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.28 : 21,417.39 = 3,890 : x
  2. Step 2: Convert to fraction form
    14,278.28/21,417.39 = 3,890/x
  3. Step 3: Cross multiply
    14,278.28x = 21,417.39 × 3,890
  4. Step 4: Simplify right side
    14,278.28x = 83,313,647.10
  5. Step 5: Solve for x
    x = 83,313,647.10/14,278.28
  6. Step 6: Final answer
    x = 5,834.99

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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.