Home / 20,623.24-28,442.50-13,900.03

Finding the Fourth Proportional to 20,623.24, 28,442.50 and 13,900.03

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Solution

The fourth proportional to 20,623.24, 28,442.50 and 13,900.03 is: 19,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.24 : 28,442.50 = 13,900.03 : x
  2. Step 2: Convert to fraction form
    20,623.24/28,442.50 = 13,900.03/x
  3. Step 3: Cross multiply
    20,623.24x = 28,442.50 × 13,900.03
  4. Step 4: Simplify right side
    20,623.24x = 395,351,603.28
  5. Step 5: Solve for x
    x = 395,351,603.28/20,623.24
  6. Step 6: Final answer
    x = 19,170.20

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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.