Home / 31,826.87-43,916.21-18,395.54

Finding the Fourth Proportional to 31,826.87, 43,916.21 and 18,395.54

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Solution

The fourth proportional to 31,826.87, 43,916.21 and 18,395.54 is: 25,383.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,826.87 : 43,916.21 = 18,395.54 : x
  2. Step 2: Convert to fraction form
    31,826.87/43,916.21 = 18,395.54/x
  3. Step 3: Cross multiply
    31,826.87x = 43,916.21 × 18,395.54
  4. Step 4: Simplify right side
    31,826.87x = 807,862,319.81
  5. Step 5: Solve for x
    x = 807,862,319.81/31,826.87
  6. Step 6: Final answer
    x = 25,383.02

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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.