Home / 20,823,030.90-31,234,546.35-12,298,979.70

Finding the Fourth Proportional to 20,823,030.90, 31,234,546.35 and 12,298,979.70

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Solution

The fourth proportional to 20,823,030.90, 31,234,546.35 and 12,298,979.70 is: 18,448,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823,030.90 : 31,234,546.35 = 12,298,979.70 : x
  2. Step 2: Convert to fraction form
    20,823,030.90/31,234,546.35 = 12,298,979.70/x
  3. Step 3: Cross multiply
    20,823,030.90x = 31,234,546.35 × 12,298,979.70
  4. Step 4: Simplify right side
    20,823,030.90x = 384,153,051,497,359.06
  5. Step 5: Solve for x
    x = 384,153,051,497,359.06/20,823,030.90
  6. Step 6: Final answer
    x = 18,448,469.55

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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.