Home / 19,407.09-26,781.42-12,235.55

Finding the Fourth Proportional to 19,407.09, 26,781.42 and 12,235.55

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Solution

The fourth proportional to 19,407.09, 26,781.42 and 12,235.55 is: 16,884.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407.09 : 26,781.42 = 12,235.55 : x
  2. Step 2: Convert to fraction form
    19,407.09/26,781.42 = 12,235.55/x
  3. Step 3: Cross multiply
    19,407.09x = 26,781.42 × 12,235.55
  4. Step 4: Simplify right side
    19,407.09x = 327,685,342.30
  5. Step 5: Solve for x
    x = 327,685,342.30/19,407.09
  6. Step 6: Final answer
    x = 16,884.83

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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.