Home / 31,587.12-43,578-18,156.24

Finding the Fourth Proportional to 31,587.12, 43,578 and 18,156.24

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Solution

The fourth proportional to 31,587.12, 43,578 and 18,156.24 is: 25,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,587.12 : 43,578 = 18,156.24 : x
  2. Step 2: Convert to fraction form
    31,587.12/43,578 = 18,156.24/x
  3. Step 3: Cross multiply
    31,587.12x = 43,578 × 18,156.24
  4. Step 4: Simplify right side
    31,587.12x = 791,212,626.72
  5. Step 5: Solve for x
    x = 791,212,626.72/31,587.12
  6. Step 6: Final answer
    x = 25,048.58

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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.