Home / 12,725,999.55-19,128,857.40-12,486,851.10

Finding the Fourth Proportional to 12,725,999.55, 19,128,857.40 and 12,486,851.10

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Solution

The fourth proportional to 12,725,999.55, 19,128,857.40 and 12,486,851.10 is: 18,769,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725,999.55 : 19,128,857.40 = 12,486,851.10 : x
  2. Step 2: Convert to fraction form
    12,725,999.55/19,128,857.40 = 12,486,851.10/x
  3. Step 3: Cross multiply
    12,725,999.55x = 19,128,857.40 × 12,486,851.10
  4. Step 4: Simplify right side
    12,725,999.55x = 238,859,194,066,933.12
  5. Step 5: Solve for x
    x = 238,859,194,066,933.12/12,725,999.55
  6. Step 6: Final answer
    x = 18,769,385.71

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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.