Home / 13,835.17-20,742.13-7,164.55

Finding the Fourth Proportional to 13,835.17, 20,742.13 and 7,164.55

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Solution

The fourth proportional to 13,835.17, 20,742.13 and 7,164.55 is: 10,741.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,835.17 : 20,742.13 = 7,164.55 : x
  2. Step 2: Convert to fraction form
    13,835.17/20,742.13 = 7,164.55/x
  3. Step 3: Cross multiply
    13,835.17x = 20,742.13 × 7,164.55
  4. Step 4: Simplify right side
    13,835.17x = 148,607,887.96
  5. Step 5: Solve for x
    x = 148,607,887.96/13,835.17
  6. Step 6: Final answer
    x = 10,741.32

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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.