Home / 28,035.75-38,689.35-15,461.31

Finding the Fourth Proportional to 28,035.75, 38,689.35 and 15,461.31

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Solution

The fourth proportional to 28,035.75, 38,689.35 and 15,461.31 is: 21,336.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.75 : 38,689.35 = 15,461.31 : x
  2. Step 2: Convert to fraction form
    28,035.75/38,689.35 = 15,461.31/x
  3. Step 3: Cross multiply
    28,035.75x = 38,689.35 × 15,461.31
  4. Step 4: Simplify right side
    28,035.75x = 598,188,034.05
  5. Step 5: Solve for x
    x = 598,188,034.05/28,035.75
  6. Step 6: Final answer
    x = 21,336.62

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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.