Home / 11,174.15-15,438.99-9,307.91

Finding the Fourth Proportional to 11,174.15, 15,438.99 and 9,307.91

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Solution

The fourth proportional to 11,174.15, 15,438.99 and 9,307.91 is: 12,860.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,174.15 : 15,438.99 = 9,307.91 : x
  2. Step 2: Convert to fraction form
    11,174.15/15,438.99 = 9,307.91/x
  3. Step 3: Cross multiply
    11,174.15x = 15,438.99 × 9,307.91
  4. Step 4: Simplify right side
    11,174.15x = 143,704,652.22
  5. Step 5: Solve for x
    x = 143,704,652.22/11,174.15
  6. Step 6: Final answer
    x = 12,860.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.