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Finding the Fourth Proportional to 19,281.40, 28,922.10 and 6,135.10

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Solution

The fourth proportional to 19,281.40, 28,922.10 and 6,135.10 is: 9,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.40 : 28,922.10 = 6,135.10 : x
  2. Step 2: Convert to fraction form
    19,281.40/28,922.10 = 6,135.10/x
  3. Step 3: Cross multiply
    19,281.40x = 28,922.10 × 6,135.10
  4. Step 4: Simplify right side
    19,281.40x = 177,439,975.71
  5. Step 5: Solve for x
    x = 177,439,975.71/19,281.40
  6. Step 6: Final answer
    x = 9,202.65

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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.