Home / 11,421.40-17,131.84-5,265.40

Finding the Fourth Proportional to 11,421.40, 17,131.84 and 5,265.40

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Solution

The fourth proportional to 11,421.40, 17,131.84 and 5,265.40 is: 7,897.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.40 : 17,131.84 = 5,265.40 : x
  2. Step 2: Convert to fraction form
    11,421.40/17,131.84 = 5,265.40/x
  3. Step 3: Cross multiply
    11,421.40x = 17,131.84 × 5,265.40
  4. Step 4: Simplify right side
    11,421.40x = 90,205,990.34
  5. Step 5: Solve for x
    x = 90,205,990.34/11,421.40
  6. Step 6: Final answer
    x = 7,897.98

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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.