Home / 15,913.56-21,906.54-15,084.12

Finding the Fourth Proportional to 15,913.56, 21,906.54 and 15,084.12

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Solution

The fourth proportional to 15,913.56, 21,906.54 and 15,084.12 is: 20,764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.56 : 21,906.54 = 15,084.12 : x
  2. Step 2: Convert to fraction form
    15,913.56/21,906.54 = 15,084.12/x
  3. Step 3: Cross multiply
    15,913.56x = 21,906.54 × 15,084.12
  4. Step 4: Simplify right side
    15,913.56x = 330,440,878.14
  5. Step 5: Solve for x
    x = 330,440,878.14/15,913.56
  6. Step 6: Final answer
    x = 20,764.74

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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.