Home / 31,985.64-44,139.53-18,558.20

Finding the Fourth Proportional to 31,985.64, 44,139.53 and 18,558.20

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Solution

The fourth proportional to 31,985.64, 44,139.53 and 18,558.20 is: 25,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.64 : 44,139.53 = 18,558.20 : x
  2. Step 2: Convert to fraction form
    31,985.64/44,139.53 = 18,558.20/x
  3. Step 3: Cross multiply
    31,985.64x = 44,139.53 × 18,558.20
  4. Step 4: Simplify right side
    31,985.64x = 819,150,382.39
  5. Step 5: Solve for x
    x = 819,150,382.39/31,985.64
  6. Step 6: Final answer
    x = 25,609.94

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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.