Home / 20,717.64-31,079.63-7,566.89

Finding the Fourth Proportional to 20,717.64, 31,079.63 and 7,566.89

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Solution

The fourth proportional to 20,717.64, 31,079.63 and 7,566.89 is: 11,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.64 : 31,079.63 = 7,566.89 : x
  2. Step 2: Convert to fraction form
    20,717.64/31,079.63 = 7,566.89/x
  3. Step 3: Cross multiply
    20,717.64x = 31,079.63 × 7,566.89
  4. Step 4: Simplify right side
    20,717.64x = 235,176,004.97
  5. Step 5: Solve for x
    x = 235,176,004.97/20,717.64
  6. Step 6: Final answer
    x = 11,351.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.