Home / 12,458.55-17,192.64-8,215.77

Finding the Fourth Proportional to 12,458.55, 17,192.64 and 8,215.77

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Solution

The fourth proportional to 12,458.55, 17,192.64 and 8,215.77 is: 11,337.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.55 : 17,192.64 = 8,215.77 : x
  2. Step 2: Convert to fraction form
    12,458.55/17,192.64 = 8,215.77/x
  3. Step 3: Cross multiply
    12,458.55x = 17,192.64 × 8,215.77
  4. Step 4: Simplify right side
    12,458.55x = 141,250,775.93
  5. Step 5: Solve for x
    x = 141,250,775.93/12,458.55
  6. Step 6: Final answer
    x = 11,337.66

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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.