Home / 19,601.50-27,042.96-12,890.74

Finding the Fourth Proportional to 19,601.50, 27,042.96 and 12,890.74

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Solution

The fourth proportional to 19,601.50, 27,042.96 and 12,890.74 is: 17,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,601.50 : 27,042.96 = 12,890.74 : x
  2. Step 2: Convert to fraction form
    19,601.50/27,042.96 = 12,890.74/x
  3. Step 3: Cross multiply
    19,601.50x = 27,042.96 × 12,890.74
  4. Step 4: Simplify right side
    19,601.50x = 348,603,766.19
  5. Step 5: Solve for x
    x = 348,603,766.19/19,601.50
  6. Step 6: Final answer
    x = 17,784.55

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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.