Home / 18,521.58-27,782.27-7,420.33

Finding the Fourth Proportional to 18,521.58, 27,782.27 and 7,420.33

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Solution

The fourth proportional to 18,521.58, 27,782.27 and 7,420.33 is: 11,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.58 : 27,782.27 = 7,420.33 : x
  2. Step 2: Convert to fraction form
    18,521.58/27,782.27 = 7,420.33/x
  3. Step 3: Cross multiply
    18,521.58x = 27,782.27 × 7,420.33
  4. Step 4: Simplify right side
    18,521.58x = 206,153,611.55
  5. Step 5: Solve for x
    x = 206,153,611.55/18,521.58
  6. Step 6: Final answer
    x = 11,130.45

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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.