Home / 30,446.42-42,000.68-20,375.26

Finding the Fourth Proportional to 30,446.42, 42,000.68 and 20,375.26

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Solution

The fourth proportional to 30,446.42, 42,000.68 and 20,375.26 is: 28,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,446.42 : 42,000.68 = 20,375.26 : x
  2. Step 2: Convert to fraction form
    30,446.42/42,000.68 = 20,375.26/x
  3. Step 3: Cross multiply
    30,446.42x = 42,000.68 × 20,375.26
  4. Step 4: Simplify right side
    30,446.42x = 855,774,775.18
  5. Step 5: Solve for x
    x = 855,774,775.18/30,446.42
  6. Step 6: Final answer
    x = 28,107.57

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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.