Home / 20,515,436.20-30,748,271.10-9,143,813.80

Finding the Fourth Proportional to 20,515,436.20, 30,748,271.10 and 9,143,813.80

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Solution

The fourth proportional to 20,515,436.20, 30,748,271.10 and 9,143,813.80 is: 13,704,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,436.20 : 30,748,271.10 = 9,143,813.80 : x
  2. Step 2: Convert to fraction form
    20,515,436.20/30,748,271.10 = 9,143,813.80/x
  3. Step 3: Cross multiply
    20,515,436.20x = 30,748,271.10 × 9,143,813.80
  4. Step 4: Simplify right side
    20,515,436.20x = 281,156,465,610,321.22
  5. Step 5: Solve for x
    x = 281,156,465,610,321.22/20,515,436.20
  6. Step 6: Final answer
    x = 13,704,630.16

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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.