Home / 13,122,912.30-19,684,368.45-12,115,142.70

Finding the Fourth Proportional to 13,122,912.30, 19,684,368.45 and 12,115,142.70

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Solution

The fourth proportional to 13,122,912.30, 19,684,368.45 and 12,115,142.70 is: 18,172,714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,912.30 : 19,684,368.45 = 12,115,142.70 : x
  2. Step 2: Convert to fraction form
    13,122,912.30/19,684,368.45 = 12,115,142.70/x
  3. Step 3: Cross multiply
    13,122,912.30x = 19,684,368.45 × 12,115,142.70
  4. Step 4: Simplify right side
    13,122,912.30x = 238,478,932,731,127.78
  5. Step 5: Solve for x
    x = 238,478,932,731,127.78/13,122,912.30
  6. Step 6: Final answer
    x = 18,172,714.05

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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.