Home / 19,412.20-26,781.06-12,239.76

Finding the Fourth Proportional to 19,412.20, 26,781.06 and 12,239.76

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Solution

The fourth proportional to 19,412.20, 26,781.06 and 12,239.76 is: 16,885.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,412.20 : 26,781.06 = 12,239.76 : x
  2. Step 2: Convert to fraction form
    19,412.20/26,781.06 = 12,239.76/x
  3. Step 3: Cross multiply
    19,412.20x = 26,781.06 × 12,239.76
  4. Step 4: Simplify right side
    19,412.20x = 327,793,746.95
  5. Step 5: Solve for x
    x = 327,793,746.95/19,412.20
  6. Step 6: Final answer
    x = 16,885.97

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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.