Home / 12,652,997.40-18,979,496.10-12,156,985.80

Finding the Fourth Proportional to 12,652,997.40, 18,979,496.10 and 12,156,985.80

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Solution

The fourth proportional to 12,652,997.40, 18,979,496.10 and 12,156,985.80 is: 18,235,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652,997.40 : 18,979,496.10 = 12,156,985.80 : x
  2. Step 2: Convert to fraction form
    12,652,997.40/18,979,496.10 = 12,156,985.80/x
  3. Step 3: Cross multiply
    12,652,997.40x = 18,979,496.10 × 12,156,985.80
  4. Step 4: Simplify right side
    12,652,997.40x = 230,733,464,578,855.41
  5. Step 5: Solve for x
    x = 230,733,464,578,855.41/12,652,997.40
  6. Step 6: Final answer
    x = 18,235,478.70

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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.