Home / 31,025.80-42,813.66-18,448.12

Finding the Fourth Proportional to 31,025.80, 42,813.66 and 18,448.12

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Solution

The fourth proportional to 31,025.80, 42,813.66 and 18,448.12 is: 25,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.80 : 42,813.66 = 18,448.12 : x
  2. Step 2: Convert to fraction form
    31,025.80/42,813.66 = 18,448.12/x
  3. Step 3: Cross multiply
    31,025.80x = 42,813.66 × 18,448.12
  4. Step 4: Simplify right side
    31,025.80x = 789,831,537.32
  5. Step 5: Solve for x
    x = 789,831,537.32/31,025.80
  6. Step 6: Final answer
    x = 25,457.25

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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.