Home / 16,355.34-22,578.84-12,812.40

Finding the Fourth Proportional to 16,355.34, 22,578.84 and 12,812.40

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Solution

The fourth proportional to 16,355.34, 22,578.84 and 12,812.40 is: 17,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,355.34 : 22,578.84 = 12,812.40 : x
  2. Step 2: Convert to fraction form
    16,355.34/22,578.84 = 12,812.40/x
  3. Step 3: Cross multiply
    16,355.34x = 22,578.84 × 12,812.40
  4. Step 4: Simplify right side
    16,355.34x = 289,289,129.62
  5. Step 5: Solve for x
    x = 289,289,129.62/16,355.34
  6. Step 6: Final answer
    x = 17,687.75

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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.