Home / 18,690.40-25,794.81-11,518.87

Finding the Fourth Proportional to 18,690.40, 25,794.81 and 11,518.87

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Solution

The fourth proportional to 18,690.40, 25,794.81 and 11,518.87 is: 15,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.40 : 25,794.81 = 11,518.87 : x
  2. Step 2: Convert to fraction form
    18,690.40/25,794.81 = 11,518.87/x
  3. Step 3: Cross multiply
    18,690.40x = 25,794.81 × 11,518.87
  4. Step 4: Simplify right side
    18,690.40x = 297,127,063.06
  5. Step 5: Solve for x
    x = 297,127,063.06/18,690.40
  6. Step 6: Final answer
    x = 15,897.31

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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.