Home / 31,683.05-43,719.64-18,933.70

Finding the Fourth Proportional to 31,683.05, 43,719.64 and 18,933.70

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Solution

The fourth proportional to 31,683.05, 43,719.64 and 18,933.70 is: 26,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,683.05 : 43,719.64 = 18,933.70 : x
  2. Step 2: Convert to fraction form
    31,683.05/43,719.64 = 18,933.70/x
  3. Step 3: Cross multiply
    31,683.05x = 43,719.64 × 18,933.70
  4. Step 4: Simplify right side
    31,683.05x = 827,774,391.23
  5. Step 5: Solve for x
    x = 827,774,391.23/31,683.05
  6. Step 6: Final answer
    x = 26,126.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.