Home / 20,265.36-30,377.39-7,782.18

Finding the Fourth Proportional to 20,265.36, 30,377.39 and 7,782.18

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Solution

The fourth proportional to 20,265.36, 30,377.39 and 7,782.18 is: 11,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.36 : 30,377.39 = 7,782.18 : x
  2. Step 2: Convert to fraction form
    20,265.36/30,377.39 = 7,782.18/x
  3. Step 3: Cross multiply
    20,265.36x = 30,377.39 × 7,782.18
  4. Step 4: Simplify right side
    20,265.36x = 236,402,278.00
  5. Step 5: Solve for x
    x = 236,402,278.00/20,265.36
  6. Step 6: Final answer
    x = 11,665.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.