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Finding the Fourth Proportional to 19,266.90, 28,902.76 and 6,619.10

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Solution

The fourth proportional to 19,266.90, 28,902.76 and 6,619.10 is: 9,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.90 : 28,902.76 = 6,619.10 : x
  2. Step 2: Convert to fraction form
    19,266.90/28,902.76 = 6,619.10/x
  3. Step 3: Cross multiply
    19,266.90x = 28,902.76 × 6,619.10
  4. Step 4: Simplify right side
    19,266.90x = 191,310,258.72
  5. Step 5: Solve for x
    x = 191,310,258.72/19,266.90
  6. Step 6: Final answer
    x = 9,929.48

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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.