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Finding the Fourth Proportional to 18,891,859.80, 28,295,799.30 and 16,372,435.80

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Solution

The fourth proportional to 18,891,859.80, 28,295,799.30 and 16,372,435.80 is: 24,522,263.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891,859.80 : 28,295,799.30 = 16,372,435.80 : x
  2. Step 2: Convert to fraction form
    18,891,859.80/28,295,799.30 = 16,372,435.80/x
  3. Step 3: Cross multiply
    18,891,859.80x = 28,295,799.30 × 16,372,435.80
  4. Step 4: Simplify right side
    18,891,859.80x = 463,271,157,448,935
  5. Step 5: Solve for x
    x = 463,271,157,448,935/18,891,859.80
  6. Step 6: Final answer
    x = 24,522,263.15

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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.