Home / 19,642.08-29,382.12-12,611.28

Finding the Fourth Proportional to 19,642.08, 29,382.12 and 12,611.28

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Solution

The fourth proportional to 19,642.08, 29,382.12 and 12,611.28 is: 18,864.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,642.08 : 29,382.12 = 12,611.28 : x
  2. Step 2: Convert to fraction form
    19,642.08/29,382.12 = 12,611.28/x
  3. Step 3: Cross multiply
    19,642.08x = 29,382.12 × 12,611.28
  4. Step 4: Simplify right side
    19,642.08x = 370,546,142.31
  5. Step 5: Solve for x
    x = 370,546,142.31/19,642.08
  6. Step 6: Final answer
    x = 18,864.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.