Home / 21,033,176.41-31,553,854.81-8,078,379.24

Finding the Fourth Proportional to 21,033,176.41, 31,553,854.81 and 8,078,379.24

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Solution

The fourth proportional to 21,033,176.41, 31,553,854.81 and 8,078,379.24 is: 12,119,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033,176.41 : 31,553,854.81 = 8,078,379.24 : x
  2. Step 2: Convert to fraction form
    21,033,176.41/31,553,854.81 = 8,078,379.24/x
  3. Step 3: Cross multiply
    21,033,176.41x = 31,553,854.81 × 8,078,379.24
  4. Step 4: Simplify right side
    21,033,176.41x = 254,904,005,639,078.12
  5. Step 5: Solve for x
    x = 254,904,005,639,078.12/21,033,176.41
  6. Step 6: Final answer
    x = 12,119,139.81

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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.