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Finding the Fourth Proportional to 20,503.08, 30,748.14 and 7,355.16

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Solution

The fourth proportional to 20,503.08, 30,748.14 and 7,355.16 is: 11,030.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.08 : 30,748.14 = 7,355.16 : x
  2. Step 2: Convert to fraction form
    20,503.08/30,748.14 = 7,355.16/x
  3. Step 3: Cross multiply
    20,503.08x = 30,748.14 × 7,355.16
  4. Step 4: Simplify right side
    20,503.08x = 226,157,489.40
  5. Step 5: Solve for x
    x = 226,157,489.40/20,503.08
  6. Step 6: Final answer
    x = 11,030.42

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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.