Home / 10,145.76-15,220.08-3,126.34

Finding the Fourth Proportional to 10,145.76, 15,220.08 and 3,126.34

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Solution

The fourth proportional to 10,145.76, 15,220.08 and 3,126.34 is: 4,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.76 : 15,220.08 = 3,126.34 : x
  2. Step 2: Convert to fraction form
    10,145.76/15,220.08 = 3,126.34/x
  3. Step 3: Cross multiply
    10,145.76x = 15,220.08 × 3,126.34
  4. Step 4: Simplify right side
    10,145.76x = 47,583,163.93
  5. Step 5: Solve for x
    x = 47,583,163.93/10,145.76
  6. Step 6: Final answer
    x = 4,689.96

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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.