Home / 18,730,639.89-28,095,318.32-7,940,992.77

Finding the Fourth Proportional to 18,730,639.89, 28,095,318.32 and 7,940,992.77

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Solution

The fourth proportional to 18,730,639.89, 28,095,318.32 and 7,940,992.77 is: 11,911,217.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730,639.89 : 28,095,318.32 = 7,940,992.77 : x
  2. Step 2: Convert to fraction form
    18,730,639.89/28,095,318.32 = 7,940,992.77/x
  3. Step 3: Cross multiply
    18,730,639.89x = 28,095,318.32 × 7,940,992.77
  4. Step 4: Simplify right side
    18,730,639.89x = 223,104,719,610,263.59
  5. Step 5: Solve for x
    x = 223,104,719,610,263.59/18,730,639.89
  6. Step 6: Final answer
    x = 11,911,217.18

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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.