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Finding the Fourth Proportional to 20,608,593.60, 30,912,890.40 and 10,530,897.60

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Solution

The fourth proportional to 20,608,593.60, 30,912,890.40 and 10,530,897.60 is: 15,796,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608,593.60 : 30,912,890.40 = 10,530,897.60 : x
  2. Step 2: Convert to fraction form
    20,608,593.60/30,912,890.40 = 10,530,897.60/x
  3. Step 3: Cross multiply
    20,608,593.60x = 30,912,890.40 × 10,530,897.60
  4. Step 4: Simplify right side
    20,608,593.60x = 325,540,483,322,423
  5. Step 5: Solve for x
    x = 325,540,483,322,423/20,608,593.60
  6. Step 6: Final answer
    x = 15,796,346.40

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Similar ratio
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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.