Home / 12,489.29-17,235.99-7,184.30

Finding the Fourth Proportional to 12,489.29, 17,235.99 and 7,184.30

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Solution

The fourth proportional to 12,489.29, 17,235.99 and 7,184.30 is: 9,914.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.29 : 17,235.99 = 7,184.30 : x
  2. Step 2: Convert to fraction form
    12,489.29/17,235.99 = 7,184.30/x
  3. Step 3: Cross multiply
    12,489.29x = 17,235.99 × 7,184.30
  4. Step 4: Simplify right side
    12,489.29x = 123,828,436.78
  5. Step 5: Solve for x
    x = 123,828,436.78/12,489.29
  6. Step 6: Final answer
    x = 9,914.77

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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.