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Finding the Fourth Proportional to 19,146.28, 28,720.98 and 5,295.28

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Solution

The fourth proportional to 19,146.28, 28,720.98 and 5,295.28 is: 7,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,146.28 : 28,720.98 = 5,295.28 : x
  2. Step 2: Convert to fraction form
    19,146.28/28,720.98 = 5,295.28/x
  3. Step 3: Cross multiply
    19,146.28x = 28,720.98 × 5,295.28
  4. Step 4: Simplify right side
    19,146.28x = 152,085,630.97
  5. Step 5: Solve for x
    x = 152,085,630.97/19,146.28
  6. Step 6: Final answer
    x = 7,943.35

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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.