Home / 20,165.40-30,237.30-8,465.40

Finding the Fourth Proportional to 20,165.40, 30,237.30 and 8,465.40

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Solution

The fourth proportional to 20,165.40, 30,237.30 and 8,465.40 is: 12,693.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.40 : 30,237.30 = 8,465.40 : x
  2. Step 2: Convert to fraction form
    20,165.40/30,237.30 = 8,465.40/x
  3. Step 3: Cross multiply
    20,165.40x = 30,237.30 × 8,465.40
  4. Step 4: Simplify right side
    20,165.40x = 255,970,839.42
  5. Step 5: Solve for x
    x = 255,970,839.42/20,165.40
  6. Step 6: Final answer
    x = 12,693.57

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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.