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Finding the Fourth Proportional to 19,001.79, 28,502.69 and 5,150.79

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Solution

The fourth proportional to 19,001.79, 28,502.69 and 5,150.79 is: 7,726.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,001.79 : 28,502.69 = 5,150.79 : x
  2. Step 2: Convert to fraction form
    19,001.79/28,502.69 = 5,150.79/x
  3. Step 3: Cross multiply
    19,001.79x = 28,502.69 × 5,150.79
  4. Step 4: Simplify right side
    19,001.79x = 146,811,344.87
  5. Step 5: Solve for x
    x = 146,811,344.87/19,001.79
  6. Step 6: Final answer
    x = 7,726.19

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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.