Home / 20,920,892.40-28,843,096.14-17,185,692.78

Finding the Fourth Proportional to 20,920,892.40, 28,843,096.14 and 17,185,692.78

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Solution

The fourth proportional to 20,920,892.40, 28,843,096.14 and 17,185,692.78 is: 23,693,472.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920,892.40 : 28,843,096.14 = 17,185,692.78 : x
  2. Step 2: Convert to fraction form
    20,920,892.40/28,843,096.14 = 17,185,692.78/x
  3. Step 3: Cross multiply
    20,920,892.40x = 28,843,096.14 × 17,185,692.78
  4. Step 4: Simplify right side
    20,920,892.40x = 495,688,589,086,043.94
  5. Step 5: Solve for x
    x = 495,688,589,086,043.94/20,920,892.40
  6. Step 6: Final answer
    x = 23,693,472.52

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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.