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Finding the Fourth Proportional to 18,728,622.40, 28,045,694.40 and 14,949,486.40

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Solution

The fourth proportional to 18,728,622.40, 28,045,694.40 and 14,949,486.40 is: 22,386,522.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,622.40 : 28,045,694.40 = 14,949,486.40 : x
  2. Step 2: Convert to fraction form
    18,728,622.40/28,045,694.40 = 14,949,486.40/x
  3. Step 3: Cross multiply
    18,728,622.40x = 28,045,694.40 × 14,949,486.40
  4. Step 4: Simplify right side
    18,728,622.40x = 419,268,727,011,356.12
  5. Step 5: Solve for x
    x = 419,268,727,011,356.12/18,728,622.40
  6. Step 6: Final answer
    x = 22,386,522.51

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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.