Home / 13,707.16-20,556.66-7,129.76

Finding the Fourth Proportional to 13,707.16, 20,556.66 and 7,129.76

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Solution

The fourth proportional to 13,707.16, 20,556.66 and 7,129.76 is: 10,692.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.16 : 20,556.66 = 7,129.76 : x
  2. Step 2: Convert to fraction form
    13,707.16/20,556.66 = 7,129.76/x
  3. Step 3: Cross multiply
    13,707.16x = 20,556.66 × 7,129.76
  4. Step 4: Simplify right side
    13,707.16x = 146,564,052.20
  5. Step 5: Solve for x
    x = 146,564,052.20/13,707.16
  6. Step 6: Final answer
    x = 10,692.52

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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.