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Finding the Fourth Proportional to 13,356.10, 20,034.15 and 7,135.30

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Solution

The fourth proportional to 13,356.10, 20,034.15 and 7,135.30 is: 10,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.10 : 20,034.15 = 7,135.30 : x
  2. Step 2: Convert to fraction form
    13,356.10/20,034.15 = 7,135.30/x
  3. Step 3: Cross multiply
    13,356.10x = 20,034.15 × 7,135.30
  4. Step 4: Simplify right side
    13,356.10x = 142,949,670.50
  5. Step 5: Solve for x
    x = 142,949,670.50/13,356.10
  6. Step 6: Final answer
    x = 10,702.95

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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.