Home / 15,946.24-21,990.54-12,162.68

Finding the Fourth Proportional to 15,946.24, 21,990.54 and 12,162.68

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Solution

The fourth proportional to 15,946.24, 21,990.54 and 12,162.68 is: 16,772.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,946.24 : 21,990.54 = 12,162.68 : x
  2. Step 2: Convert to fraction form
    15,946.24/21,990.54 = 12,162.68/x
  3. Step 3: Cross multiply
    15,946.24x = 21,990.54 × 12,162.68
  4. Step 4: Simplify right side
    15,946.24x = 267,463,901.05
  5. Step 5: Solve for x
    x = 267,463,901.05/15,946.24
  6. Step 6: Final answer
    x = 16,772.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.