Home / 14,148.72-21,223.68-4,287.72

Finding the Fourth Proportional to 14,148.72, 21,223.68 and 4,287.72

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Solution

The fourth proportional to 14,148.72, 21,223.68 and 4,287.72 is: 6,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,148.72 : 21,223.68 = 4,287.72 : x
  2. Step 2: Convert to fraction form
    14,148.72/21,223.68 = 4,287.72/x
  3. Step 3: Cross multiply
    14,148.72x = 21,223.68 × 4,287.72
  4. Step 4: Simplify right side
    14,148.72x = 91,001,197.21
  5. Step 5: Solve for x
    x = 91,001,197.21/14,148.72
  6. Step 6: Final answer
    x = 6,431.76

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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.