Home / 31,217.77-43,081.37-18,649.81

Finding the Fourth Proportional to 31,217.77, 43,081.37 and 18,649.81

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Solution

The fourth proportional to 31,217.77, 43,081.37 and 18,649.81 is: 25,737.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,217.77 : 43,081.37 = 18,649.81 : x
  2. Step 2: Convert to fraction form
    31,217.77/43,081.37 = 18,649.81/x
  3. Step 3: Cross multiply
    31,217.77x = 43,081.37 × 18,649.81
  4. Step 4: Simplify right side
    31,217.77x = 803,459,365.04
  5. Step 5: Solve for x
    x = 803,459,365.04/31,217.77
  6. Step 6: Final answer
    x = 25,737.24

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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.