Home / 28,664,081.50-39,555,841.98-15,611,569.78

Finding the Fourth Proportional to 28,664,081.50, 39,555,841.98 and 15,611,569.78

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Solution

The fourth proportional to 28,664,081.50, 39,555,841.98 and 15,611,569.78 is: 21,543,644.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664,081.50 : 39,555,841.98 = 15,611,569.78 : x
  2. Step 2: Convert to fraction form
    28,664,081.50/39,555,841.98 = 15,611,569.78/x
  3. Step 3: Cross multiply
    28,664,081.50x = 39,555,841.98 × 15,611,569.78
  4. Step 4: Simplify right side
    28,664,081.50x = 617,528,787,277,423.25
  5. Step 5: Solve for x
    x = 617,528,787,277,423.25/28,664,081.50
  6. Step 6: Final answer
    x = 21,543,644.69

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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.