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Finding the Fourth Proportional to 14,309.95, 21,464.70 and 3,921.70

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Solution

The fourth proportional to 14,309.95, 21,464.70 and 3,921.70 is: 5,882.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,309.95 : 21,464.70 = 3,921.70 : x
  2. Step 2: Convert to fraction form
    14,309.95/21,464.70 = 3,921.70/x
  3. Step 3: Cross multiply
    14,309.95x = 21,464.70 × 3,921.70
  4. Step 4: Simplify right side
    14,309.95x = 84,178,113.99
  5. Step 5: Solve for x
    x = 84,178,113.99/14,309.95
  6. Step 6: Final answer
    x = 5,882.49

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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.