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Finding the Fourth Proportional to 18,363,764.80, 27,545,647.20 and 8,286,068.80

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Solution

The fourth proportional to 18,363,764.80, 27,545,647.20 and 8,286,068.80 is: 12,429,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363,764.80 : 27,545,647.20 = 8,286,068.80 : x
  2. Step 2: Convert to fraction form
    18,363,764.80/27,545,647.20 = 8,286,068.80/x
  3. Step 3: Cross multiply
    18,363,764.80x = 27,545,647.20 × 8,286,068.80
  4. Step 4: Simplify right side
    18,363,764.80x = 228,245,127,839,727.34
  5. Step 5: Solve for x
    x = 228,245,127,839,727.34/18,363,764.80
  6. Step 6: Final answer
    x = 12,429,103.20

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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.