Home / 21,149.21-31,717.33-5,564.81

Finding the Fourth Proportional to 21,149.21, 31,717.33 and 5,564.81

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Solution

The fourth proportional to 21,149.21, 31,717.33 and 5,564.81 is: 8,345.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.21 : 31,717.33 = 5,564.81 : x
  2. Step 2: Convert to fraction form
    21,149.21/31,717.33 = 5,564.81/x
  3. Step 3: Cross multiply
    21,149.21x = 31,717.33 × 5,564.81
  4. Step 4: Simplify right side
    21,149.21x = 176,500,915.16
  5. Step 5: Solve for x
    x = 176,500,915.16/21,149.21
  6. Step 6: Final answer
    x = 8,345.51

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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.