Home / 20,993,911.20-31,490,866.80-8,877,056.40

Finding the Fourth Proportional to 20,993,911.20, 31,490,866.80 and 8,877,056.40

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Solution

The fourth proportional to 20,993,911.20, 31,490,866.80 and 8,877,056.40 is: 13,315,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,911.20 : 31,490,866.80 = 8,877,056.40 : x
  2. Step 2: Convert to fraction form
    20,993,911.20/31,490,866.80 = 8,877,056.40/x
  3. Step 3: Cross multiply
    20,993,911.20x = 31,490,866.80 × 8,877,056.40
  4. Step 4: Simplify right side
    20,993,911.20x = 279,546,200,668,487.53
  5. Step 5: Solve for x
    x = 279,546,200,668,487.53/20,993,911.20
  6. Step 6: Final answer
    x = 13,315,584.60

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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.