Home / 15,420,947.84-21,281,033.04-8,545,544.72

Finding the Fourth Proportional to 15,420,947.84, 21,281,033.04 and 8,545,544.72

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Solution

The fourth proportional to 15,420,947.84, 21,281,033.04 and 8,545,544.72 is: 11,792,920.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420,947.84 : 21,281,033.04 = 8,545,544.72 : x
  2. Step 2: Convert to fraction form
    15,420,947.84/21,281,033.04 = 8,545,544.72/x
  3. Step 3: Cross multiply
    15,420,947.84x = 21,281,033.04 × 8,545,544.72
  4. Step 4: Simplify right side
    15,420,947.84x = 181,858,019,531,117.56
  5. Step 5: Solve for x
    x = 181,858,019,531,117.56/15,420,947.84
  6. Step 6: Final answer
    x = 11,792,920.99

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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.