Home / 12,117.64-16,721.76-6,812.96

Finding the Fourth Proportional to 12,117.64, 16,721.76 and 6,812.96

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Solution

The fourth proportional to 12,117.64, 16,721.76 and 6,812.96 is: 9,401.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.64 : 16,721.76 = 6,812.96 : x
  2. Step 2: Convert to fraction form
    12,117.64/16,721.76 = 6,812.96/x
  3. Step 3: Cross multiply
    12,117.64x = 16,721.76 × 6,812.96
  4. Step 4: Simplify right side
    12,117.64x = 113,924,682.01
  5. Step 5: Solve for x
    x = 113,924,682.01/12,117.64
  6. Step 6: Final answer
    x = 9,401.56

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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.