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Finding the Fourth Proportional to 19,108.68, 28,663.08 and 5,257.68

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Solution

The fourth proportional to 19,108.68, 28,663.08 and 5,257.68 is: 7,886.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.68 : 28,663.08 = 5,257.68 : x
  2. Step 2: Convert to fraction form
    19,108.68/28,663.08 = 5,257.68/x
  3. Step 3: Cross multiply
    19,108.68x = 28,663.08 × 5,257.68
  4. Step 4: Simplify right side
    19,108.68x = 150,701,302.45
  5. Step 5: Solve for x
    x = 150,701,302.45/19,108.68
  6. Step 6: Final answer
    x = 7,886.54

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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.