Home / 11,421.55-17,108.01-5,489.74

Finding the Fourth Proportional to 11,421.55, 17,108.01 and 5,489.74

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Solution

The fourth proportional to 11,421.55, 17,108.01 and 5,489.74 is: 8,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.55 : 17,108.01 = 5,489.74 : x
  2. Step 2: Convert to fraction form
    11,421.55/17,108.01 = 5,489.74/x
  3. Step 3: Cross multiply
    11,421.55x = 17,108.01 × 5,489.74
  4. Step 4: Simplify right side
    11,421.55x = 93,918,526.82
  5. Step 5: Solve for x
    x = 93,918,526.82/11,421.55
  6. Step 6: Final answer
    x = 8,222.92

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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.