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Finding the Fourth Proportional to 18,695,635.60, 28,041,379.80 and 5,233,824.40

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Solution

The fourth proportional to 18,695,635.60, 28,041,379.80 and 5,233,824.40 is: 7,850,156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695,635.60 : 28,041,379.80 = 5,233,824.40 : x
  2. Step 2: Convert to fraction form
    18,695,635.60/28,041,379.80 = 5,233,824.40/x
  3. Step 3: Cross multiply
    18,695,635.60x = 28,041,379.80 × 5,233,824.40
  4. Step 4: Simplify right side
    18,695,635.60x = 146,763,657,806,907.12
  5. Step 5: Solve for x
    x = 146,763,657,806,907.12/18,695,635.60
  6. Step 6: Final answer
    x = 7,850,156.10

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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.