Home / 14,138.64-21,214.98-10,005.21

Finding the Fourth Proportional to 14,138.64, 21,214.98 and 10,005.21

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Solution

The fourth proportional to 14,138.64, 21,214.98 and 10,005.21 is: 15,012.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.64 : 21,214.98 = 10,005.21 : x
  2. Step 2: Convert to fraction form
    14,138.64/21,214.98 = 10,005.21/x
  3. Step 3: Cross multiply
    14,138.64x = 21,214.98 × 10,005.21
  4. Step 4: Simplify right side
    14,138.64x = 212,260,330.05
  5. Step 5: Solve for x
    x = 212,260,330.05/14,138.64
  6. Step 6: Final answer
    x = 15,012.78

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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.