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Finding the Fourth Proportional to 19,005.29, 28,507.95 and 5,154.29

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Solution

The fourth proportional to 19,005.29, 28,507.95 and 5,154.29 is: 7,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.29 : 28,507.95 = 5,154.29 : x
  2. Step 2: Convert to fraction form
    19,005.29/28,507.95 = 5,154.29/x
  3. Step 3: Cross multiply
    19,005.29x = 28,507.95 × 5,154.29
  4. Step 4: Simplify right side
    19,005.29x = 146,938,241.61
  5. Step 5: Solve for x
    x = 146,938,241.61/19,005.29
  6. Step 6: Final answer
    x = 7,731.44

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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.