Home / 16,661.50-24,896.74-12,690.70

Finding the Fourth Proportional to 16,661.50, 24,896.74 and 12,690.70

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Solution

The fourth proportional to 16,661.50, 24,896.74 and 12,690.70 is: 18,963.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,661.50 : 24,896.74 = 12,690.70 : x
  2. Step 2: Convert to fraction form
    16,661.50/24,896.74 = 12,690.70/x
  3. Step 3: Cross multiply
    16,661.50x = 24,896.74 × 12,690.70
  4. Step 4: Simplify right side
    16,661.50x = 315,957,058.32
  5. Step 5: Solve for x
    x = 315,957,058.32/16,661.50
  6. Step 6: Final answer
    x = 18,963.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.