Home / 31,690.36-43,737.31-18,259.02

Finding the Fourth Proportional to 31,690.36, 43,737.31 and 18,259.02

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Solution

The fourth proportional to 31,690.36, 43,737.31 and 18,259.02 is: 25,200.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.36 : 43,737.31 = 18,259.02 : x
  2. Step 2: Convert to fraction form
    31,690.36/43,737.31 = 18,259.02/x
  3. Step 3: Cross multiply
    31,690.36x = 43,737.31 × 18,259.02
  4. Step 4: Simplify right side
    31,690.36x = 798,600,418.04
  5. Step 5: Solve for x
    x = 798,600,418.04/31,690.36
  6. Step 6: Final answer
    x = 25,200.11

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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.