Home / 21,256.92-31,885.61-8,768.34

Finding the Fourth Proportional to 21,256.92, 31,885.61 and 8,768.34

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Solution

The fourth proportional to 21,256.92, 31,885.61 and 8,768.34 is: 13,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.92 : 31,885.61 = 8,768.34 : x
  2. Step 2: Convert to fraction form
    21,256.92/31,885.61 = 8,768.34/x
  3. Step 3: Cross multiply
    21,256.92x = 31,885.61 × 8,768.34
  4. Step 4: Simplify right side
    21,256.92x = 279,583,825.75
  5. Step 5: Solve for x
    x = 279,583,825.75/21,256.92
  6. Step 6: Final answer
    x = 13,152.60

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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.