Home / 12,455.55-17,188.85-6,790.30

Finding the Fourth Proportional to 12,455.55, 17,188.85 and 6,790.30

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Solution

The fourth proportional to 12,455.55, 17,188.85 and 6,790.30 is: 9,370.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.55 : 17,188.85 = 6,790.30 : x
  2. Step 2: Convert to fraction form
    12,455.55/17,188.85 = 6,790.30/x
  3. Step 3: Cross multiply
    12,455.55x = 17,188.85 × 6,790.30
  4. Step 4: Simplify right side
    12,455.55x = 116,717,448.16
  5. Step 5: Solve for x
    x = 116,717,448.16/12,455.55
  6. Step 6: Final answer
    x = 9,370.72

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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.