Home / 12,132,007.70-18,198,011.55-11,208,218.90

Finding the Fourth Proportional to 12,132,007.70, 18,198,011.55 and 11,208,218.90

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Solution

The fourth proportional to 12,132,007.70, 18,198,011.55 and 11,208,218.90 is: 16,812,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132,007.70 : 18,198,011.55 = 11,208,218.90 : x
  2. Step 2: Convert to fraction form
    12,132,007.70/18,198,011.55 = 11,208,218.90/x
  3. Step 3: Cross multiply
    12,132,007.70x = 18,198,011.55 × 11,208,218.90
  4. Step 4: Simplify right side
    12,132,007.70x = 203,967,296,997,128.31
  5. Step 5: Solve for x
    x = 203,967,296,997,128.31/12,132,007.70
  6. Step 6: Final answer
    x = 16,812,328.35

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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.