Home / 21,949.56-32,916.15-7,905.78

Finding the Fourth Proportional to 21,949.56, 32,916.15 and 7,905.78

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Solution

The fourth proportional to 21,949.56, 32,916.15 and 7,905.78 is: 11,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.56 : 32,916.15 = 7,905.78 : x
  2. Step 2: Convert to fraction form
    21,949.56/32,916.15 = 7,905.78/x
  3. Step 3: Cross multiply
    21,949.56x = 32,916.15 × 7,905.78
  4. Step 4: Simplify right side
    21,949.56x = 260,227,840.35
  5. Step 5: Solve for x
    x = 260,227,840.35/21,949.56
  6. Step 6: Final answer
    x = 11,855.72

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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.