Home / 19,125.80-28,690.47-7,439.90

Finding the Fourth Proportional to 19,125.80, 28,690.47 and 7,439.90

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Solution

The fourth proportional to 19,125.80, 28,690.47 and 7,439.90 is: 11,160.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,125.80 : 28,690.47 = 7,439.90 : x
  2. Step 2: Convert to fraction form
    19,125.80/28,690.47 = 7,439.90/x
  3. Step 3: Cross multiply
    19,125.80x = 28,690.47 × 7,439.90
  4. Step 4: Simplify right side
    19,125.80x = 213,454,227.75
  5. Step 5: Solve for x
    x = 213,454,227.75/19,125.80
  6. Step 6: Final answer
    x = 11,160.54

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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.