Home / 15,133.03-20,885.43-9,166.78

Finding the Fourth Proportional to 15,133.03, 20,885.43 and 9,166.78

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Solution

The fourth proportional to 15,133.03, 20,885.43 and 9,166.78 is: 12,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.03 : 20,885.43 = 9,166.78 : x
  2. Step 2: Convert to fraction form
    15,133.03/20,885.43 = 9,166.78/x
  3. Step 3: Cross multiply
    15,133.03x = 20,885.43 × 9,166.78
  4. Step 4: Simplify right side
    15,133.03x = 191,452,142.02
  5. Step 5: Solve for x
    x = 191,452,142.02/15,133.03
  6. Step 6: Final answer
    x = 12,651.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.