Home / 14,203.28-21,305.12-5,438.64

Finding the Fourth Proportional to 14,203.28, 21,305.12 and 5,438.64

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Solution

The fourth proportional to 14,203.28, 21,305.12 and 5,438.64 is: 8,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,203.28 : 21,305.12 = 5,438.64 : x
  2. Step 2: Convert to fraction form
    14,203.28/21,305.12 = 5,438.64/x
  3. Step 3: Cross multiply
    14,203.28x = 21,305.12 × 5,438.64
  4. Step 4: Simplify right side
    14,203.28x = 115,870,877.84
  5. Step 5: Solve for x
    x = 115,870,877.84/14,203.28
  6. Step 6: Final answer
    x = 8,158.04

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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.