Home / 21,269.68-31,911.06-10,888.72

Finding the Fourth Proportional to 21,269.68, 31,911.06 and 10,888.72

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Solution

The fourth proportional to 21,269.68, 31,911.06 and 10,888.72 is: 16,336.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.68 : 31,911.06 = 10,888.72 : x
  2. Step 2: Convert to fraction form
    21,269.68/31,911.06 = 10,888.72/x
  3. Step 3: Cross multiply
    21,269.68x = 31,911.06 × 10,888.72
  4. Step 4: Simplify right side
    21,269.68x = 347,470,597.24
  5. Step 5: Solve for x
    x = 347,470,597.24/21,269.68
  6. Step 6: Final answer
    x = 16,336.43

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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.