Home / 20,683.64-31,013.69-14,117.78

Finding the Fourth Proportional to 20,683.64, 31,013.69 and 14,117.78

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Solution

The fourth proportional to 20,683.64, 31,013.69 and 14,117.78 is: 21,168.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.64 : 31,013.69 = 14,117.78 : x
  2. Step 2: Convert to fraction form
    20,683.64/31,013.69 = 14,117.78/x
  3. Step 3: Cross multiply
    20,683.64x = 31,013.69 × 14,117.78
  4. Step 4: Simplify right side
    20,683.64x = 437,844,452.41
  5. Step 5: Solve for x
    x = 437,844,452.41/20,683.64
  6. Step 6: Final answer
    x = 21,168.64

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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.