Home / 19,611.25-29,407.61-7,122.47

Finding the Fourth Proportional to 19,611.25, 29,407.61 and 7,122.47

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Solution

The fourth proportional to 19,611.25, 29,407.61 and 7,122.47 is: 10,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.25 : 29,407.61 = 7,122.47 : x
  2. Step 2: Convert to fraction form
    19,611.25/29,407.61 = 7,122.47/x
  3. Step 3: Cross multiply
    19,611.25x = 29,407.61 × 7,122.47
  4. Step 4: Simplify right side
    19,611.25x = 209,454,690.76
  5. Step 5: Solve for x
    x = 209,454,690.76/19,611.25
  6. Step 6: Final answer
    x = 10,680.33

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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.