Home / 13,125.43-18,113.12-7,748.11

Finding the Fourth Proportional to 13,125.43, 18,113.12 and 7,748.11

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Solution

The fourth proportional to 13,125.43, 18,113.12 and 7,748.11 is: 10,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.43 : 18,113.12 = 7,748.11 : x
  2. Step 2: Convert to fraction form
    13,125.43/18,113.12 = 7,748.11/x
  3. Step 3: Cross multiply
    13,125.43x = 18,113.12 × 7,748.11
  4. Step 4: Simplify right side
    13,125.43x = 140,342,446.20
  5. Step 5: Solve for x
    x = 140,342,446.20/13,125.43
  6. Step 6: Final answer
    x = 10,692.41

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1.5x scale

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.