Home / 18,748.80-28,109.16-6,261.57

Finding the Fourth Proportional to 18,748.80, 28,109.16 and 6,261.57

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Solution

The fourth proportional to 18,748.80, 28,109.16 and 6,261.57 is: 9,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.80 : 28,109.16 = 6,261.57 : x
  2. Step 2: Convert to fraction form
    18,748.80/28,109.16 = 6,261.57/x
  3. Step 3: Cross multiply
    18,748.80x = 28,109.16 × 6,261.57
  4. Step 4: Simplify right side
    18,748.80x = 176,007,472.98
  5. Step 5: Solve for x
    x = 176,007,472.98/18,748.80
  6. Step 6: Final answer
    x = 9,387.67

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1.5x scale

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.