Home / 15,146.10-20,900.43-8,431.29

Finding the Fourth Proportional to 15,146.10, 20,900.43 and 8,431.29

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Solution

The fourth proportional to 15,146.10, 20,900.43 and 8,431.29 is: 11,634.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.10 : 20,900.43 = 8,431.29 : x
  2. Step 2: Convert to fraction form
    15,146.10/20,900.43 = 8,431.29/x
  3. Step 3: Cross multiply
    15,146.10x = 20,900.43 × 8,431.29
  4. Step 4: Simplify right side
    15,146.10x = 176,217,586.45
  5. Step 5: Solve for x
    x = 176,217,586.45/15,146.10
  6. Step 6: Final answer
    x = 11,634.52

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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.