Home / 20,920,889.90-28,843,092.68-17,185,690.28

Finding the Fourth Proportional to 20,920,889.90, 28,843,092.68 and 17,185,690.28

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Solution

The fourth proportional to 20,920,889.90, 28,843,092.68 and 17,185,690.28 is: 23,693,469.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920,889.90 : 28,843,092.68 = 17,185,690.28 : x
  2. Step 2: Convert to fraction form
    20,920,889.90/28,843,092.68 = 17,185,690.28/x
  3. Step 3: Cross multiply
    20,920,889.90x = 28,843,092.68 × 17,185,690.28
  4. Step 4: Simplify right side
    20,920,889.90x = 495,688,457,515,815.19
  5. Step 5: Solve for x
    x = 495,688,457,515,815.19/20,920,889.90
  6. Step 6: Final answer
    x = 23,693,469.06

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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.