Home / 21,087.08-31,635.42-7,235.24

Finding the Fourth Proportional to 21,087.08, 31,635.42 and 7,235.24

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Solution

The fourth proportional to 21,087.08, 31,635.42 and 7,235.24 is: 10,854.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.08 : 31,635.42 = 7,235.24 : x
  2. Step 2: Convert to fraction form
    21,087.08/31,635.42 = 7,235.24/x
  3. Step 3: Cross multiply
    21,087.08x = 31,635.42 × 7,235.24
  4. Step 4: Simplify right side
    21,087.08x = 228,889,856.20
  5. Step 5: Solve for x
    x = 228,889,856.20/21,087.08
  6. Step 6: Final answer
    x = 10,854.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.