Home / 12,775.57-19,169.51-5,379.11

Finding the Fourth Proportional to 12,775.57, 19,169.51 and 5,379.11

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Solution

The fourth proportional to 12,775.57, 19,169.51 and 5,379.11 is: 8,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.57 : 19,169.51 = 5,379.11 : x
  2. Step 2: Convert to fraction form
    12,775.57/19,169.51 = 5,379.11/x
  3. Step 3: Cross multiply
    12,775.57x = 19,169.51 × 5,379.11
  4. Step 4: Simplify right side
    12,775.57x = 103,114,882.34
  5. Step 5: Solve for x
    x = 103,114,882.34/12,775.57
  6. Step 6: Final answer
    x = 8,071.25

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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.