Home / 20,018.40-30,027.60-9,631.20

Finding the Fourth Proportional to 20,018.40, 30,027.60 and 9,631.20

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Solution

The fourth proportional to 20,018.40, 30,027.60 and 9,631.20 is: 14,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.40 : 30,027.60 = 9,631.20 : x
  2. Step 2: Convert to fraction form
    20,018.40/30,027.60 = 9,631.20/x
  3. Step 3: Cross multiply
    20,018.40x = 30,027.60 × 9,631.20
  4. Step 4: Simplify right side
    20,018.40x = 289,201,821.12
  5. Step 5: Solve for x
    x = 289,201,821.12/20,018.40
  6. Step 6: Final answer
    x = 14,446.80

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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.