Home / 12,490.96-17,240.40-7,188.84

Finding the Fourth Proportional to 12,490.96, 17,240.40 and 7,188.84

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Solution

The fourth proportional to 12,490.96, 17,240.40 and 7,188.84 is: 9,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.96 : 17,240.40 = 7,188.84 : x
  2. Step 2: Convert to fraction form
    12,490.96/17,240.40 = 7,188.84/x
  3. Step 3: Cross multiply
    12,490.96x = 17,240.40 × 7,188.84
  4. Step 4: Simplify right side
    12,490.96x = 123,938,477.14
  5. Step 5: Solve for x
    x = 123,938,477.14/12,490.96
  6. Step 6: Final answer
    x = 9,922.25

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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.