Home / 12,109,478.76-16,715,130.13-7,216,235.28

Finding the Fourth Proportional to 12,109,478.76, 16,715,130.13 and 7,216,235.28

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Solution

The fourth proportional to 12,109,478.76, 16,715,130.13 and 7,216,235.28 is: 9,960,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109,478.76 : 16,715,130.13 = 7,216,235.28 : x
  2. Step 2: Convert to fraction form
    12,109,478.76/16,715,130.13 = 7,216,235.28/x
  3. Step 3: Cross multiply
    12,109,478.76x = 16,715,130.13 × 7,216,235.28
  4. Step 4: Simplify right side
    12,109,478.76x = 120,620,311,753,897
  5. Step 5: Solve for x
    x = 120,620,311,753,897/12,109,478.76
  6. Step 6: Final answer
    x = 9,960,817.81

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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.