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Finding the Fourth Proportional to 18,468,007.80, 27,702,011.70 and 10,815,257.40

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Solution

The fourth proportional to 18,468,007.80, 27,702,011.70 and 10,815,257.40 is: 16,222,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468,007.80 : 27,702,011.70 = 10,815,257.40 : x
  2. Step 2: Convert to fraction form
    18,468,007.80/27,702,011.70 = 10,815,257.40/x
  3. Step 3: Cross multiply
    18,468,007.80x = 27,702,011.70 × 10,815,257.40
  4. Step 4: Simplify right side
    18,468,007.80x = 299,604,387,033,311.56
  5. Step 5: Solve for x
    x = 299,604,387,033,311.56/18,468,007.80
  6. Step 6: Final answer
    x = 16,222,886.10

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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.