Home / 31,731.37-43,800.27-18,307.98

Finding the Fourth Proportional to 31,731.37, 43,800.27 and 18,307.98

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Solution

The fourth proportional to 31,731.37, 43,800.27 and 18,307.98 is: 25,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,731.37 : 43,800.27 = 18,307.98 : x
  2. Step 2: Convert to fraction form
    31,731.37/43,800.27 = 18,307.98/x
  3. Step 3: Cross multiply
    31,731.37x = 43,800.27 × 18,307.98
  4. Step 4: Simplify right side
    31,731.37x = 801,894,467.15
  5. Step 5: Solve for x
    x = 801,894,467.15/31,731.37
  6. Step 6: Final answer
    x = 25,271.35

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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.