Home / 13,482.45-20,174.40-7,938.36

Finding the Fourth Proportional to 13,482.45, 20,174.40 and 7,938.36

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Solution

The fourth proportional to 13,482.45, 20,174.40 and 7,938.36 is: 11,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,482.45 : 20,174.40 = 7,938.36 : x
  2. Step 2: Convert to fraction form
    13,482.45/20,174.40 = 7,938.36/x
  3. Step 3: Cross multiply
    13,482.45x = 20,174.40 × 7,938.36
  4. Step 4: Simplify right side
    13,482.45x = 160,151,649.98
  5. Step 5: Solve for x
    x = 160,151,649.98/13,482.45
  6. Step 6: Final answer
    x = 11,878.53

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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.