Home / 12,109,478.32-16,715,129.52-7,216,234.84

Finding the Fourth Proportional to 12,109,478.32, 16,715,129.52 and 7,216,234.84

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Solution

The fourth proportional to 12,109,478.32, 16,715,129.52 and 7,216,234.84 is: 9,960,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109,478.32 : 16,715,129.52 = 7,216,234.84 : x
  2. Step 2: Convert to fraction form
    12,109,478.32/16,715,129.52 = 7,216,234.84/x
  3. Step 3: Cross multiply
    12,109,478.32x = 16,715,129.52 × 7,216,234.84
  4. Step 4: Simplify right side
    12,109,478.32x = 120,620,299,997,336.47
  5. Step 5: Solve for x
    x = 120,620,299,997,336.47/12,109,478.32
  6. Step 6: Final answer
    x = 9,960,817.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.