Home / 18,689,621.40-28,034,432.10-12,307,080.60

Finding the Fourth Proportional to 18,689,621.40, 28,034,432.10 and 12,307,080.60

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Solution

The fourth proportional to 18,689,621.40, 28,034,432.10 and 12,307,080.60 is: 18,460,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,621.40 : 28,034,432.10 = 12,307,080.60 : x
  2. Step 2: Convert to fraction form
    18,689,621.40/28,034,432.10 = 12,307,080.60/x
  3. Step 3: Cross multiply
    18,689,621.40x = 28,034,432.10 × 12,307,080.60
  4. Step 4: Simplify right side
    18,689,621.40x = 345,022,015,429,927.25
  5. Step 5: Solve for x
    x = 345,022,015,429,927.25/18,689,621.40
  6. Step 6: Final answer
    x = 18,460,620.90

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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.