Home / 12,778.29-19,169.23-4,457.09

Finding the Fourth Proportional to 12,778.29, 19,169.23 and 4,457.09

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Solution

The fourth proportional to 12,778.29, 19,169.23 and 4,457.09 is: 6,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.29 : 19,169.23 = 4,457.09 : x
  2. Step 2: Convert to fraction form
    12,778.29/19,169.23 = 4,457.09/x
  3. Step 3: Cross multiply
    12,778.29x = 19,169.23 × 4,457.09
  4. Step 4: Simplify right side
    12,778.29x = 85,438,983.34
  5. Step 5: Solve for x
    x = 85,438,983.34/12,778.29
  6. Step 6: Final answer
    x = 6,686.26

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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.