Home / 19,188.95-28,781.42-5,150.48

Finding the Fourth Proportional to 19,188.95, 28,781.42 and 5,150.48

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Solution

The fourth proportional to 19,188.95, 28,781.42 and 5,150.48 is: 7,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.95 : 28,781.42 = 5,150.48 : x
  2. Step 2: Convert to fraction form
    19,188.95/28,781.42 = 5,150.48/x
  3. Step 3: Cross multiply
    19,188.95x = 28,781.42 × 5,150.48
  4. Step 4: Simplify right side
    19,188.95x = 148,238,128.08
  5. Step 5: Solve for x
    x = 148,238,128.08/19,188.95
  6. Step 6: Final answer
    x = 7,725.18

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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.