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Finding the Fourth Proportional to 20,356.98, 30,483.63 and 13,410.42

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Solution

The fourth proportional to 20,356.98, 30,483.63 and 13,410.42 is: 20,081.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.98 : 30,483.63 = 13,410.42 : x
  2. Step 2: Convert to fraction form
    20,356.98/30,483.63 = 13,410.42/x
  3. Step 3: Cross multiply
    20,356.98x = 30,483.63 × 13,410.42
  4. Step 4: Simplify right side
    20,356.98x = 408,798,281.42
  5. Step 5: Solve for x
    x = 408,798,281.42/20,356.98
  6. Step 6: Final answer
    x = 20,081.48

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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.