Home / 28,664,520-39,557,037.60-15,787,464

Finding the Fourth Proportional to 28,664,520, 39,557,037.60 and 15,787,464

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Solution

The fourth proportional to 28,664,520, 39,557,037.60 and 15,787,464 is: 21,786,700.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664,520 : 39,557,037.60 = 15,787,464 : x
  2. Step 2: Convert to fraction form
    28,664,520/39,557,037.60 = 15,787,464/x
  3. Step 3: Cross multiply
    28,664,520x = 39,557,037.60 × 15,787,464
  4. Step 4: Simplify right side
    28,664,520x = 624,505,307,056,646.38
  5. Step 5: Solve for x
    x = 624,505,307,056,646.38/28,664,520
  6. Step 6: Final answer
    x = 21,786,700.32

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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.