Home / 14,139.65-21,212.53-4,145.22

Finding the Fourth Proportional to 14,139.65, 21,212.53 and 4,145.22

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Solution

The fourth proportional to 14,139.65, 21,212.53 and 4,145.22 is: 6,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.65 : 21,212.53 = 4,145.22 : x
  2. Step 2: Convert to fraction form
    14,139.65/21,212.53 = 4,145.22/x
  3. Step 3: Cross multiply
    14,139.65x = 21,212.53 × 4,145.22
  4. Step 4: Simplify right side
    14,139.65x = 87,930,593.24
  5. Step 5: Solve for x
    x = 87,930,593.24/14,139.65
  6. Step 6: Final answer
    x = 6,218.72

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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.