Home / 31,320.16-43,223.16-18,742.48

Finding the Fourth Proportional to 31,320.16, 43,223.16 and 18,742.48

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Solution

The fourth proportional to 31,320.16, 43,223.16 and 18,742.48 is: 25,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,320.16 : 43,223.16 = 18,742.48 : x
  2. Step 2: Convert to fraction form
    31,320.16/43,223.16 = 18,742.48/x
  3. Step 3: Cross multiply
    31,320.16x = 43,223.16 × 18,742.48
  4. Step 4: Simplify right side
    31,320.16x = 810,109,211.84
  5. Step 5: Solve for x
    x = 810,109,211.84/31,320.16
  6. Step 6: Final answer
    x = 25,865.42

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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.