Home / 18,967,487.72-28,439,698.79-7,439,140.04

Finding the Fourth Proportional to 18,967,487.72, 28,439,698.79 and 7,439,140.04

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Solution

The fourth proportional to 18,967,487.72, 28,439,698.79 and 7,439,140.04 is: 11,154,186.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967,487.72 : 28,439,698.79 = 7,439,140.04 : x
  2. Step 2: Convert to fraction form
    18,967,487.72/28,439,698.79 = 7,439,140.04/x
  3. Step 3: Cross multiply
    18,967,487.72x = 28,439,698.79 × 7,439,140.04
  4. Step 4: Simplify right side
    18,967,487.72x = 211,566,901,870,627.91
  5. Step 5: Solve for x
    x = 211,566,901,870,627.91/18,967,487.72
  6. Step 6: Final answer
    x = 11,154,186.84

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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.