Home / 20,414.40-30,605.28-18,774.24

Finding the Fourth Proportional to 20,414.40, 30,605.28 and 18,774.24

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Solution

The fourth proportional to 20,414.40, 30,605.28 and 18,774.24 is: 28,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.40 : 30,605.28 = 18,774.24 : x
  2. Step 2: Convert to fraction form
    20,414.40/30,605.28 = 18,774.24/x
  3. Step 3: Cross multiply
    20,414.40x = 30,605.28 × 18,774.24
  4. Step 4: Simplify right side
    20,414.40x = 574,590,871.99
  5. Step 5: Solve for x
    x = 574,590,871.99/20,414.40
  6. Step 6: Final answer
    x = 28,146.35

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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.