Home / 12,129,342.30-18,194,013.45-11,137,319.10

Finding the Fourth Proportional to 12,129,342.30, 18,194,013.45 and 11,137,319.10

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Solution

The fourth proportional to 12,129,342.30, 18,194,013.45 and 11,137,319.10 is: 16,705,978.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,342.30 : 18,194,013.45 = 11,137,319.10 : x
  2. Step 2: Convert to fraction form
    12,129,342.30/18,194,013.45 = 11,137,319.10/x
  3. Step 3: Cross multiply
    12,129,342.30x = 18,194,013.45 × 11,137,319.10
  4. Step 4: Simplify right side
    12,129,342.30x = 202,632,533,502,341.88
  5. Step 5: Solve for x
    x = 202,632,533,502,341.88/12,129,342.30
  6. Step 6: Final answer
    x = 16,705,978.65

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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.