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Finding the Fourth Proportional to 20,503.60, 30,690.60 and 16,097.20

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Solution

The fourth proportional to 20,503.60, 30,690.60 and 16,097.20 is: 24,094.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.60 : 30,690.60 = 16,097.20 : x
  2. Step 2: Convert to fraction form
    20,503.60/30,690.60 = 16,097.20/x
  3. Step 3: Cross multiply
    20,503.60x = 30,690.60 × 16,097.20
  4. Step 4: Simplify right side
    20,503.60x = 494,032,726.32
  5. Step 5: Solve for x
    x = 494,032,726.32/20,503.60
  6. Step 6: Final answer
    x = 24,094.93

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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.