Home / 10,421.68-15,632.72-3,401.68

Finding the Fourth Proportional to 10,421.68, 15,632.72 and 3,401.68

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Solution

The fourth proportional to 10,421.68, 15,632.72 and 3,401.68 is: 5,102.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.68 : 15,632.72 = 3,401.68 : x
  2. Step 2: Convert to fraction form
    10,421.68/15,632.72 = 3,401.68/x
  3. Step 3: Cross multiply
    10,421.68x = 15,632.72 × 3,401.68
  4. Step 4: Simplify right side
    10,421.68x = 53,177,510.97
  5. Step 5: Solve for x
    x = 53,177,510.97/10,421.68
  6. Step 6: Final answer
    x = 5,102.59

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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.