Home / 21,160.00-31,737.41-12,280.16

Finding the Fourth Proportional to 21,160.00, 31,737.41 and 12,280.16

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Solution

The fourth proportional to 21,160.00, 31,737.41 and 12,280.16 is: 18,418.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.00 : 31,737.41 = 12,280.16 : x
  2. Step 2: Convert to fraction form
    21,160.00/31,737.41 = 12,280.16/x
  3. Step 3: Cross multiply
    21,160.00x = 31,737.41 × 12,280.16
  4. Step 4: Simplify right side
    21,160.00x = 389,740,481.90
  5. Step 5: Solve for x
    x = 389,740,481.90/21,160.00
  6. Step 6: Final answer
    x = 18,418.74

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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.