Home / 15,117.72-20,859.24-8,401.94

Finding the Fourth Proportional to 15,117.72, 20,859.24 and 8,401.94

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Solution

The fourth proportional to 15,117.72, 20,859.24 and 8,401.94 is: 11,592.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.72 : 20,859.24 = 8,401.94 : x
  2. Step 2: Convert to fraction form
    15,117.72/20,859.24 = 8,401.94/x
  3. Step 3: Cross multiply
    15,117.72x = 20,859.24 × 8,401.94
  4. Step 4: Simplify right side
    15,117.72x = 175,258,082.93
  5. Step 5: Solve for x
    x = 175,258,082.93/15,117.72
  6. Step 6: Final answer
    x = 11,592.89

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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.