Home / 20,993,881.20-31,490,821.80-8,877,026.40

Finding the Fourth Proportional to 20,993,881.20, 31,490,821.80 and 8,877,026.40

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Solution

The fourth proportional to 20,993,881.20, 31,490,821.80 and 8,877,026.40 is: 13,315,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,881.20 : 31,490,821.80 = 8,877,026.40 : x
  2. Step 2: Convert to fraction form
    20,993,881.20/31,490,821.80 = 8,877,026.40/x
  3. Step 3: Cross multiply
    20,993,881.20x = 31,490,821.80 × 8,877,026.40
  4. Step 4: Simplify right side
    20,993,881.20x = 279,544,856,476,295.53
  5. Step 5: Solve for x
    x = 279,544,856,476,295.53/20,993,881.20
  6. Step 6: Final answer
    x = 13,315,539.60

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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.