Home / 14,147.89-21,221.93-4,287.15

Finding the Fourth Proportional to 14,147.89, 21,221.93 and 4,287.15

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Solution

The fourth proportional to 14,147.89, 21,221.93 and 4,287.15 is: 6,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.89 : 21,221.93 = 4,287.15 : x
  2. Step 2: Convert to fraction form
    14,147.89/21,221.93 = 4,287.15/x
  3. Step 3: Cross multiply
    14,147.89x = 21,221.93 × 4,287.15
  4. Step 4: Simplify right side
    14,147.89x = 90,981,607.92
  5. Step 5: Solve for x
    x = 90,981,607.92/14,147.89
  6. Step 6: Final answer
    x = 6,430.76

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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.