Home / 28,260.06-38,998.60-15,684.81

Finding the Fourth Proportional to 28,260.06, 38,998.60 and 15,684.81

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Solution

The fourth proportional to 28,260.06, 38,998.60 and 15,684.81 is: 21,644.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.06 : 38,998.60 = 15,684.81 : x
  2. Step 2: Convert to fraction form
    28,260.06/38,998.60 = 15,684.81/x
  3. Step 3: Cross multiply
    28,260.06x = 38,998.60 × 15,684.81
  4. Step 4: Simplify right side
    28,260.06x = 611,685,631.27
  5. Step 5: Solve for x
    x = 611,685,631.27/28,260.06
  6. Step 6: Final answer
    x = 21,644.88

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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.