Home / 14,057.92-21,106.32-7,137.28

Finding the Fourth Proportional to 14,057.92, 21,106.32 and 7,137.28

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Solution

The fourth proportional to 14,057.92, 21,106.32 and 7,137.28 is: 10,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,057.92 : 21,106.32 = 7,137.28 : x
  2. Step 2: Convert to fraction form
    14,057.92/21,106.32 = 7,137.28/x
  3. Step 3: Cross multiply
    14,057.92x = 21,106.32 × 7,137.28
  4. Step 4: Simplify right side
    14,057.92x = 150,641,715.61
  5. Step 5: Solve for x
    x = 150,641,715.61/14,057.92
  6. Step 6: Final answer
    x = 10,715.79

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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.