Home / 20,802,402.20-31,203,603.30-20,018,581.40

Finding the Fourth Proportional to 20,802,402.20, 31,203,603.30 and 20,018,581.40

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Solution

The fourth proportional to 20,802,402.20, 31,203,603.30 and 20,018,581.40 is: 30,027,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802,402.20 : 31,203,603.30 = 20,018,581.40 : x
  2. Step 2: Convert to fraction form
    20,802,402.20/31,203,603.30 = 20,018,581.40/x
  3. Step 3: Cross multiply
    20,802,402.20x = 31,203,603.30 × 20,018,581.40
  4. Step 4: Simplify right side
    20,802,402.20x = 624,651,872,634,358.62
  5. Step 5: Solve for x
    x = 624,651,872,634,358.62/20,802,402.20
  6. Step 6: Final answer
    x = 30,027,872.10

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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.