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Finding the Fourth Proportional to 19,293.84, 28,943.10 and 5,442.84

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Solution

The fourth proportional to 19,293.84, 28,943.10 and 5,442.84 is: 8,164.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,293.84 : 28,943.10 = 5,442.84 : x
  2. Step 2: Convert to fraction form
    19,293.84/28,943.10 = 5,442.84/x
  3. Step 3: Cross multiply
    19,293.84x = 28,943.10 × 5,442.84
  4. Step 4: Simplify right side
    19,293.84x = 157,532,662.40
  5. Step 5: Solve for x
    x = 157,532,662.40/19,293.84
  6. Step 6: Final answer
    x = 8,164.92

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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.