Home / 20,491.04-30,697.68-12,153.44

Finding the Fourth Proportional to 20,491.04, 30,697.68 and 12,153.44

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Solution

The fourth proportional to 20,491.04, 30,697.68 and 12,153.44 is: 18,207.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.04 : 30,697.68 = 12,153.44 : x
  2. Step 2: Convert to fraction form
    20,491.04/30,697.68 = 12,153.44/x
  3. Step 3: Cross multiply
    20,491.04x = 30,697.68 × 12,153.44
  4. Step 4: Simplify right side
    20,491.04x = 373,082,412.02
  5. Step 5: Solve for x
    x = 373,082,412.02/20,491.04
  6. Step 6: Final answer
    x = 18,207.10

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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.