Home / 15,931.20-23,890.32-7,163.76

Finding the Fourth Proportional to 15,931.20, 23,890.32 and 7,163.76

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Solution

The fourth proportional to 15,931.20, 23,890.32 and 7,163.76 is: 10,742.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.20 : 23,890.32 = 7,163.76 : x
  2. Step 2: Convert to fraction form
    15,931.20/23,890.32 = 7,163.76/x
  3. Step 3: Cross multiply
    15,931.20x = 23,890.32 × 7,163.76
  4. Step 4: Simplify right side
    15,931.20x = 171,144,518.80
  5. Step 5: Solve for x
    x = 171,144,518.80/15,931.20
  6. Step 6: Final answer
    x = 10,742.73

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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.