Home / 12,791,018.21-17,653,405.28-8,143,318.53

Finding the Fourth Proportional to 12,791,018.21, 17,653,405.28 and 8,143,318.53

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Solution

The fourth proportional to 12,791,018.21, 17,653,405.28 and 8,143,318.53 is: 11,238,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791,018.21 : 17,653,405.28 = 8,143,318.53 : x
  2. Step 2: Convert to fraction form
    12,791,018.21/17,653,405.28 = 8,143,318.53/x
  3. Step 3: Cross multiply
    12,791,018.21x = 17,653,405.28 × 8,143,318.53
  4. Step 4: Simplify right side
    12,791,018.21x = 143,757,302,293,507.25
  5. Step 5: Solve for x
    x = 143,757,302,293,507.25/12,791,018.21
  6. Step 6: Final answer
    x = 11,238,925.63

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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.