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Finding the Fourth Proportional to 15,502,590.80, 23,211,895.80 and 12,143,358.80

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Solution

The fourth proportional to 15,502,590.80, 23,211,895.80 and 12,143,358.80 is: 18,182,146.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502,590.80 : 23,211,895.80 = 12,143,358.80 : x
  2. Step 2: Convert to fraction form
    15,502,590.80/23,211,895.80 = 12,143,358.80/x
  3. Step 3: Cross multiply
    15,502,590.80x = 23,211,895.80 × 12,143,358.80
  4. Step 4: Simplify right side
    15,502,590.80x = 281,870,379,127,613.06
  5. Step 5: Solve for x
    x = 281,870,379,127,613.06/15,502,590.80
  6. Step 6: Final answer
    x = 18,182,146.63

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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.