Home / 10,140.46-15,212.14-3,121.08

Finding the Fourth Proportional to 10,140.46, 15,212.14 and 3,121.08

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Solution

The fourth proportional to 10,140.46, 15,212.14 and 3,121.08 is: 4,682.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.46 : 15,212.14 = 3,121.08 : x
  2. Step 2: Convert to fraction form
    10,140.46/15,212.14 = 3,121.08/x
  3. Step 3: Cross multiply
    10,140.46x = 15,212.14 × 3,121.08
  4. Step 4: Simplify right side
    10,140.46x = 47,478,305.91
  5. Step 5: Solve for x
    x = 47,478,305.91/10,140.46
  6. Step 6: Final answer
    x = 4,682.07

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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.