Home / 12,078,815.64-18,095,362.83-7,140,061.47

Finding the Fourth Proportional to 12,078,815.64, 18,095,362.83 and 7,140,061.47

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Solution

The fourth proportional to 12,078,815.64, 18,095,362.83 and 7,140,061.47 is: 10,696,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078,815.64 : 18,095,362.83 = 7,140,061.47 : x
  2. Step 2: Convert to fraction form
    12,078,815.64/18,095,362.83 = 7,140,061.47/x
  3. Step 3: Cross multiply
    12,078,815.64x = 18,095,362.83 × 7,140,061.47
  4. Step 4: Simplify right side
    12,078,815.64x = 129,202,002,928,153.14
  5. Step 5: Solve for x
    x = 129,202,002,928,153.14/12,078,815.64
  6. Step 6: Final answer
    x = 10,696,578.77

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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.