Home / 20,831,143.41-28,801,808.28-18,245,387.70

Finding the Fourth Proportional to 20,831,143.41, 28,801,808.28 and 18,245,387.70

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Solution

The fourth proportional to 20,831,143.41, 28,801,808.28 and 18,245,387.70 is: 25,226,659.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831,143.41 : 28,801,808.28 = 18,245,387.70 : x
  2. Step 2: Convert to fraction form
    20,831,143.41/28,801,808.28 = 18,245,387.70/x
  3. Step 3: Cross multiply
    20,831,143.41x = 28,801,808.28 × 18,245,387.70
  4. Step 4: Simplify right side
    20,831,143.41x = 525,500,158,529,670.19
  5. Step 5: Solve for x
    x = 525,500,158,529,670.19/20,831,143.41
  6. Step 6: Final answer
    x = 25,226,659.34

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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.