Home / 10,130.90-15,196.34-5,197.78

Finding the Fourth Proportional to 10,130.90, 15,196.34 and 5,197.78

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Solution

The fourth proportional to 10,130.90, 15,196.34 and 5,197.78 is: 7,796.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.90 : 15,196.34 = 5,197.78 : x
  2. Step 2: Convert to fraction form
    10,130.90/15,196.34 = 5,197.78/x
  3. Step 3: Cross multiply
    10,130.90x = 15,196.34 × 5,197.78
  4. Step 4: Simplify right side
    10,130.90x = 78,987,232.13
  5. Step 5: Solve for x
    x = 78,987,232.13/10,130.90
  6. Step 6: Final answer
    x = 7,796.66

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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.