Home / 12,128,003.20-18,192,004.80-9,975,667.15

Finding the Fourth Proportional to 12,128,003.20, 18,192,004.80 and 9,975,667.15

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Solution

The fourth proportional to 12,128,003.20, 18,192,004.80 and 9,975,667.15 is: 14,963,500.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,003.20 : 18,192,004.80 = 9,975,667.15 : x
  2. Step 2: Convert to fraction form
    12,128,003.20/18,192,004.80 = 9,975,667.15/x
  3. Step 3: Cross multiply
    12,128,003.20x = 18,192,004.80 × 9,975,667.15
  4. Step 4: Simplify right side
    12,128,003.20x = 181,477,384,676,002.34
  5. Step 5: Solve for x
    x = 181,477,384,676,002.34/12,128,003.20
  6. Step 6: Final answer
    x = 14,963,500.73

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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.