Home / 20,763,478.60-31,145,217.90-8,628,909.10

Finding the Fourth Proportional to 20,763,478.60, 31,145,217.90 and 8,628,909.10

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Solution

The fourth proportional to 20,763,478.60, 31,145,217.90 and 8,628,909.10 is: 12,943,363.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763,478.60 : 31,145,217.90 = 8,628,909.10 : x
  2. Step 2: Convert to fraction form
    20,763,478.60/31,145,217.90 = 8,628,909.10/x
  3. Step 3: Cross multiply
    20,763,478.60x = 31,145,217.90 × 8,628,909.10
  4. Step 4: Simplify right side
    20,763,478.60x = 268,749,254,158,792.88
  5. Step 5: Solve for x
    x = 268,749,254,158,792.88/20,763,478.60
  6. Step 6: Final answer
    x = 12,943,363.65

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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.