Home / 21,269.22-31,873.59-15,678.60

Finding the Fourth Proportional to 21,269.22, 31,873.59 and 15,678.60

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Solution

The fourth proportional to 21,269.22, 31,873.59 and 15,678.60 is: 23,495.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.22 : 31,873.59 = 15,678.60 : x
  2. Step 2: Convert to fraction form
    21,269.22/31,873.59 = 15,678.60/x
  3. Step 3: Cross multiply
    21,269.22x = 31,873.59 × 15,678.60
  4. Step 4: Simplify right side
    21,269.22x = 499,733,268.17
  5. Step 5: Solve for x
    x = 499,733,268.17/21,269.22
  6. Step 6: Final answer
    x = 23,495.61

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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.