Home / 15,431.01-21,294.41-8,717.34

Finding the Fourth Proportional to 15,431.01, 21,294.41 and 8,717.34

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Solution

The fourth proportional to 15,431.01, 21,294.41 and 8,717.34 is: 12,029.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.01 : 21,294.41 = 8,717.34 : x
  2. Step 2: Convert to fraction form
    15,431.01/21,294.41 = 8,717.34/x
  3. Step 3: Cross multiply
    15,431.01x = 21,294.41 × 8,717.34
  4. Step 4: Simplify right side
    15,431.01x = 185,630,568.48
  5. Step 5: Solve for x
    x = 185,630,568.48/15,431.01
  6. Step 6: Final answer
    x = 12,029.71

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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.