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Finding the Fourth Proportional to 14,139.30, 21,208.95 and 6,363.30

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Solution

The fourth proportional to 14,139.30, 21,208.95 and 6,363.30 is: 9,544.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.30 : 21,208.95 = 6,363.30 : x
  2. Step 2: Convert to fraction form
    14,139.30/21,208.95 = 6,363.30/x
  3. Step 3: Cross multiply
    14,139.30x = 21,208.95 × 6,363.30
  4. Step 4: Simplify right side
    14,139.30x = 134,958,911.54
  5. Step 5: Solve for x
    x = 134,958,911.54/14,139.30
  6. Step 6: Final answer
    x = 9,544.95

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1.5x scale

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.