Home / 14,358.87-19,816.25-8,391.20

Finding the Fourth Proportional to 14,358.87, 19,816.25 and 8,391.20

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Solution

The fourth proportional to 14,358.87, 19,816.25 and 8,391.20 is: 11,580.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,358.87 : 19,816.25 = 8,391.20 : x
  2. Step 2: Convert to fraction form
    14,358.87/19,816.25 = 8,391.20/x
  3. Step 3: Cross multiply
    14,358.87x = 19,816.25 × 8,391.20
  4. Step 4: Simplify right side
    14,358.87x = 166,281,975.96
  5. Step 5: Solve for x
    x = 166,281,975.96/14,358.87
  6. Step 6: Final answer
    x = 11,580.44

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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.