Home / 14,579.40-21,815.10-10,691.40

Finding the Fourth Proportional to 14,579.40, 21,815.10 and 10,691.40

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Solution

The fourth proportional to 14,579.40, 21,815.10 and 10,691.40 is: 15,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.40 : 21,815.10 = 10,691.40 : x
  2. Step 2: Convert to fraction form
    14,579.40/21,815.10 = 10,691.40/x
  3. Step 3: Cross multiply
    14,579.40x = 21,815.10 × 10,691.40
  4. Step 4: Simplify right side
    14,579.40x = 233,233,960.14
  5. Step 5: Solve for x
    x = 233,233,960.14/14,579.40
  6. Step 6: Final answer
    x = 15,997.50

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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.