Home / 20,462.56-28,235.68-11,509.76

Finding the Fourth Proportional to 20,462.56, 28,235.68 and 11,509.76

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Solution

The fourth proportional to 20,462.56, 28,235.68 and 11,509.76 is: 15,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.56 : 28,235.68 = 11,509.76 : x
  2. Step 2: Convert to fraction form
    20,462.56/28,235.68 = 11,509.76/x
  3. Step 3: Cross multiply
    20,462.56x = 28,235.68 × 11,509.76
  4. Step 4: Simplify right side
    20,462.56x = 324,985,900.24
  5. Step 5: Solve for x
    x = 324,985,900.24/20,462.56
  6. Step 6: Final answer
    x = 15,881.98

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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.