Home / 12,455.01-17,164.22-8,912.07

Finding the Fourth Proportional to 12,455.01, 17,164.22 and 8,912.07

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Solution

The fourth proportional to 12,455.01, 17,164.22 and 8,912.07 is: 12,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.01 : 17,164.22 = 8,912.07 : x
  2. Step 2: Convert to fraction form
    12,455.01/17,164.22 = 8,912.07/x
  3. Step 3: Cross multiply
    12,455.01x = 17,164.22 × 8,912.07
  4. Step 4: Simplify right side
    12,455.01x = 152,968,685.58
  5. Step 5: Solve for x
    x = 152,968,685.58/12,455.01
  6. Step 6: Final answer
    x = 12,281.70

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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.