Home / 12,516,407.87-18,740,974.72-7,942,693.77

Finding the Fourth Proportional to 12,516,407.87, 18,740,974.72 and 7,942,693.77

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Solution

The fourth proportional to 12,516,407.87, 18,740,974.72 and 7,942,693.77 is: 11,892,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516,407.87 : 18,740,974.72 = 7,942,693.77 : x
  2. Step 2: Convert to fraction form
    12,516,407.87/18,740,974.72 = 7,942,693.77/x
  3. Step 3: Cross multiply
    12,516,407.87x = 18,740,974.72 × 7,942,693.77
  4. Step 4: Simplify right side
    12,516,407.87x = 148,853,823,091,921.22
  5. Step 5: Solve for x
    x = 148,853,823,091,921.22/12,516,407.87
  6. Step 6: Final answer
    x = 11,892,695.14

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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.