Home / 20,178,705.30-30,271,994.55-8,664,150.30

Finding the Fourth Proportional to 20,178,705.30, 30,271,994.55 and 8,664,150.30

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Solution

The fourth proportional to 20,178,705.30, 30,271,994.55 and 8,664,150.30 is: 12,997,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178,705.30 : 30,271,994.55 = 8,664,150.30 : x
  2. Step 2: Convert to fraction form
    20,178,705.30/30,271,994.55 = 8,664,150.30/x
  3. Step 3: Cross multiply
    20,178,705.30x = 30,271,994.55 × 8,664,150.30
  4. Step 4: Simplify right side
    20,178,705.30x = 262,281,110,661,980.91
  5. Step 5: Solve for x
    x = 262,281,110,661,980.91/20,178,705.30
  6. Step 6: Final answer
    x = 12,997,915.71

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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.