Home / 19,416.20-26,778.66-13,040.87

Finding the Fourth Proportional to 19,416.20, 26,778.66 and 13,040.87

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Solution

The fourth proportional to 19,416.20, 26,778.66 and 13,040.87 is: 17,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,416.20 : 26,778.66 = 13,040.87 : x
  2. Step 2: Convert to fraction form
    19,416.20/26,778.66 = 13,040.87/x
  3. Step 3: Cross multiply
    19,416.20x = 26,778.66 × 13,040.87
  4. Step 4: Simplify right side
    19,416.20x = 349,217,023.83
  5. Step 5: Solve for x
    x = 349,217,023.83/19,416.20
  6. Step 6: Final answer
    x = 17,985.86

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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.