Home / 12,913,125.35-17,820,918.90-7,111,905.56

Finding the Fourth Proportional to 12,913,125.35, 17,820,918.90 and 7,111,905.56

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Solution

The fourth proportional to 12,913,125.35, 17,820,918.90 and 7,111,905.56 is: 9,814,873.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913,125.35 : 17,820,918.90 = 7,111,905.56 : x
  2. Step 2: Convert to fraction form
    12,913,125.35/17,820,918.90 = 7,111,905.56/x
  3. Step 3: Cross multiply
    12,913,125.35x = 17,820,918.90 × 7,111,905.56
  4. Step 4: Simplify right side
    12,913,125.35x = 126,740,692,120,114.47
  5. Step 5: Solve for x
    x = 126,740,692,120,114.47/12,913,125.35
  6. Step 6: Final answer
    x = 9,814,873.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.