Home / 19,188.34-28,780.16-5,149.47

Finding the Fourth Proportional to 19,188.34, 28,780.16 and 5,149.47

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Solution

The fourth proportional to 19,188.34, 28,780.16 and 5,149.47 is: 7,723.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.34 : 28,780.16 = 5,149.47 : x
  2. Step 2: Convert to fraction form
    19,188.34/28,780.16 = 5,149.47/x
  3. Step 3: Cross multiply
    19,188.34x = 28,780.16 × 5,149.47
  4. Step 4: Simplify right side
    19,188.34x = 148,202,681.66
  5. Step 5: Solve for x
    x = 148,202,681.66/19,188.34
  6. Step 6: Final answer
    x = 7,723.58

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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.