Home / 19,005.56-28,509.50-7,318.79

Finding the Fourth Proportional to 19,005.56, 28,509.50 and 7,318.79

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Solution

The fourth proportional to 19,005.56, 28,509.50 and 7,318.79 is: 10,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.56 : 28,509.50 = 7,318.79 : x
  2. Step 2: Convert to fraction form
    19,005.56/28,509.50 = 7,318.79/x
  3. Step 3: Cross multiply
    19,005.56x = 28,509.50 × 7,318.79
  4. Step 4: Simplify right side
    19,005.56x = 208,654,919.25
  5. Step 5: Solve for x
    x = 208,654,919.25/19,005.56
  6. Step 6: Final answer
    x = 10,978.63

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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.