Home / 12,455.05-17,188.29-7,150.89

Finding the Fourth Proportional to 12,455.05, 17,188.29 and 7,150.89

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Solution

The fourth proportional to 12,455.05, 17,188.29 and 7,150.89 is: 9,868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.05 : 17,188.29 = 7,150.89 : x
  2. Step 2: Convert to fraction form
    12,455.05/17,188.29 = 7,150.89/x
  3. Step 3: Cross multiply
    12,455.05x = 17,188.29 × 7,150.89
  4. Step 4: Simplify right side
    12,455.05x = 122,911,607.30
  5. Step 5: Solve for x
    x = 122,911,607.30/12,455.05
  6. Step 6: Final answer
    x = 9,868.42

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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.