Home / 15,009,699.21-20,713,402.62-8,134,181.28

Finding the Fourth Proportional to 15,009,699.21, 20,713,402.62 and 8,134,181.28

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Solution

The fourth proportional to 15,009,699.21, 20,713,402.62 and 8,134,181.28 is: 11,225,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009,699.21 : 20,713,402.62 = 8,134,181.28 : x
  2. Step 2: Convert to fraction form
    15,009,699.21/20,713,402.62 = 8,134,181.28/x
  3. Step 3: Cross multiply
    15,009,699.21x = 20,713,402.62 × 8,134,181.28
  4. Step 4: Simplify right side
    15,009,699.21x = 168,486,571,836,706.97
  5. Step 5: Solve for x
    x = 168,486,571,836,706.97/15,009,699.21
  6. Step 6: Final answer
    x = 11,225,179.76

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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.