Home / 14,179.19-21,270.24-5,421.47

Finding the Fourth Proportional to 14,179.19, 21,270.24 and 5,421.47

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Solution

The fourth proportional to 14,179.19, 21,270.24 and 5,421.47 is: 8,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.19 : 21,270.24 = 5,421.47 : x
  2. Step 2: Convert to fraction form
    14,179.19/21,270.24 = 5,421.47/x
  3. Step 3: Cross multiply
    14,179.19x = 21,270.24 × 5,421.47
  4. Step 4: Simplify right side
    14,179.19x = 115,315,968.05
  5. Step 5: Solve for x
    x = 115,315,968.05/14,179.19
  6. Step 6: Final answer
    x = 8,132.76

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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.