Home / 20,859.27-31,289.01-5,276.91

Finding the Fourth Proportional to 20,859.27, 31,289.01 and 5,276.91

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Solution

The fourth proportional to 20,859.27, 31,289.01 and 5,276.91 is: 7,915.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.27 : 31,289.01 = 5,276.91 : x
  2. Step 2: Convert to fraction form
    20,859.27/31,289.01 = 5,276.91/x
  3. Step 3: Cross multiply
    20,859.27x = 31,289.01 × 5,276.91
  4. Step 4: Simplify right side
    20,859.27x = 165,109,289.76
  5. Step 5: Solve for x
    x = 165,109,289.76/20,859.27
  6. Step 6: Final answer
    x = 7,915.39

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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.