Home / 12,126,731.20-18,190,096.80-11,648,434.30

Finding the Fourth Proportional to 12,126,731.20, 18,190,096.80 and 11,648,434.30

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Solution

The fourth proportional to 12,126,731.20, 18,190,096.80 and 11,648,434.30 is: 17,472,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,731.20 : 18,190,096.80 = 11,648,434.30 : x
  2. Step 2: Convert to fraction form
    12,126,731.20/18,190,096.80 = 11,648,434.30/x
  3. Step 3: Cross multiply
    12,126,731.20x = 18,190,096.80 × 11,648,434.30
  4. Step 4: Simplify right side
    12,126,731.20x = 211,886,147,485,440.25
  5. Step 5: Solve for x
    x = 211,886,147,485,440.25/12,126,731.20
  6. Step 6: Final answer
    x = 17,472,651.45

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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.