Home / 20,838.64-31,258.18-5,256.26

Finding the Fourth Proportional to 20,838.64, 31,258.18 and 5,256.26

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Solution

The fourth proportional to 20,838.64, 31,258.18 and 5,256.26 is: 7,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.64 : 31,258.18 = 5,256.26 : x
  2. Step 2: Convert to fraction form
    20,838.64/31,258.18 = 5,256.26/x
  3. Step 3: Cross multiply
    20,838.64x = 31,258.18 × 5,256.26
  4. Step 4: Simplify right side
    20,838.64x = 164,301,121.21
  5. Step 5: Solve for x
    x = 164,301,121.21/20,838.64
  6. Step 6: Final answer
    x = 7,884.45

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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.