Home / 21,125.75-31,693.63-6,894.16

Finding the Fourth Proportional to 21,125.75, 31,693.63 and 6,894.16

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Solution

The fourth proportional to 21,125.75, 31,693.63 and 6,894.16 is: 10,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.75 : 31,693.63 = 6,894.16 : x
  2. Step 2: Convert to fraction form
    21,125.75/31,693.63 = 6,894.16/x
  3. Step 3: Cross multiply
    21,125.75x = 31,693.63 × 6,894.16
  4. Step 4: Simplify right side
    21,125.75x = 218,500,956.20
  5. Step 5: Solve for x
    x = 218,500,956.20/21,125.75
  6. Step 6: Final answer
    x = 10,342.87

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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.