Home / 21,970.28-32,977.29-12,114.20

Finding the Fourth Proportional to 21,970.28, 32,977.29 and 12,114.20

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Solution

The fourth proportional to 21,970.28, 32,977.29 and 12,114.20 is: 18,183.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.28 : 32,977.29 = 12,114.20 : x
  2. Step 2: Convert to fraction form
    21,970.28/32,977.29 = 12,114.20/x
  3. Step 3: Cross multiply
    21,970.28x = 32,977.29 × 12,114.20
  4. Step 4: Simplify right side
    21,970.28x = 399,493,261.06
  5. Step 5: Solve for x
    x = 399,493,261.06/21,970.28
  6. Step 6: Final answer
    x = 18,183.35

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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.