Home / 30,132.06-45,207.64-18,137.35

Finding the Fourth Proportional to 30,132.06, 45,207.64 and 18,137.35

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Solution

The fourth proportional to 30,132.06, 45,207.64 and 18,137.35 is: 27,211.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.06 : 45,207.64 = 18,137.35 : x
  2. Step 2: Convert to fraction form
    30,132.06/45,207.64 = 18,137.35/x
  3. Step 3: Cross multiply
    30,132.06x = 45,207.64 × 18,137.35
  4. Step 4: Simplify right side
    30,132.06x = 819,946,919.55
  5. Step 5: Solve for x
    x = 819,946,919.55/30,132.06
  6. Step 6: Final answer
    x = 27,211.77

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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.