Home / 13,338.60-19,982.30-7,860.20

Finding the Fourth Proportional to 13,338.60, 19,982.30 and 7,860.20

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Solution

The fourth proportional to 13,338.60, 19,982.30 and 7,860.20 is: 11,775.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.60 : 19,982.30 = 7,860.20 : x
  2. Step 2: Convert to fraction form
    13,338.60/19,982.30 = 7,860.20/x
  3. Step 3: Cross multiply
    13,338.60x = 19,982.30 × 7,860.20
  4. Step 4: Simplify right side
    13,338.60x = 157,064,874.46
  5. Step 5: Solve for x
    x = 157,064,874.46/13,338.60
  6. Step 6: Final answer
    x = 11,775.21

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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.