Home / 31,307.16-43,205.22-18,729.48

Finding the Fourth Proportional to 31,307.16, 43,205.22 and 18,729.48

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Solution

The fourth proportional to 31,307.16, 43,205.22 and 18,729.48 is: 25,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,307.16 : 43,205.22 = 18,729.48 : x
  2. Step 2: Convert to fraction form
    31,307.16/43,205.22 = 18,729.48/x
  3. Step 3: Cross multiply
    31,307.16x = 43,205.22 × 18,729.48
  4. Step 4: Simplify right side
    31,307.16x = 809,211,303.89
  5. Step 5: Solve for x
    x = 809,211,303.89/31,307.16
  6. Step 6: Final answer
    x = 25,847.48

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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.