Home / 31,216.77-43,079.99-18,648.81

Finding the Fourth Proportional to 31,216.77, 43,079.99 and 18,648.81

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Solution

The fourth proportional to 31,216.77, 43,079.99 and 18,648.81 is: 25,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,216.77 : 43,079.99 = 18,648.81 : x
  2. Step 2: Convert to fraction form
    31,216.77/43,079.99 = 18,648.81/x
  3. Step 3: Cross multiply
    31,216.77x = 43,079.99 × 18,648.81
  4. Step 4: Simplify right side
    31,216.77x = 803,390,455.07
  5. Step 5: Solve for x
    x = 803,390,455.07/31,216.77
  6. Step 6: Final answer
    x = 25,735.86

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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.