Home / 13,223.12-19,820.10-5,425.25

Finding the Fourth Proportional to 13,223.12, 19,820.10 and 5,425.25

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Solution

The fourth proportional to 13,223.12, 19,820.10 and 5,425.25 is: 8,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.12 : 19,820.10 = 5,425.25 : x
  2. Step 2: Convert to fraction form
    13,223.12/19,820.10 = 5,425.25/x
  3. Step 3: Cross multiply
    13,223.12x = 19,820.10 × 5,425.25
  4. Step 4: Simplify right side
    13,223.12x = 107,528,997.53
  5. Step 5: Solve for x
    x = 107,528,997.53/13,223.12
  6. Step 6: Final answer
    x = 8,131.89

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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.