Home / 21,132,005.30-31,698,007.95-19,704,331.70

Finding the Fourth Proportional to 21,132,005.30, 31,698,007.95 and 19,704,331.70

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Solution

The fourth proportional to 21,132,005.30, 31,698,007.95 and 19,704,331.70 is: 29,556,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132,005.30 : 31,698,007.95 = 19,704,331.70 : x
  2. Step 2: Convert to fraction form
    21,132,005.30/31,698,007.95 = 19,704,331.70/x
  3. Step 3: Cross multiply
    21,132,005.30x = 31,698,007.95 × 19,704,331.70
  4. Step 4: Simplify right side
    21,132,005.30x = 624,588,062,876,037
  5. Step 5: Solve for x
    x = 624,588,062,876,037/21,132,005.30
  6. Step 6: Final answer
    x = 29,556,497.55

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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.