Home / 39,585.60-54,626.64-21,680.75

Finding the Fourth Proportional to 39,585.60, 54,626.64 and 21,680.75

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Solution

The fourth proportional to 39,585.60, 54,626.64 and 21,680.75 is: 29,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,585.60 : 54,626.64 = 21,680.75 : x
  2. Step 2: Convert to fraction form
    39,585.60/54,626.64 = 21,680.75/x
  3. Step 3: Cross multiply
    39,585.60x = 54,626.64 × 21,680.75
  4. Step 4: Simplify right side
    39,585.60x = 1,184,346,252.05
  5. Step 5: Solve for x
    x = 1,184,346,252.05/39,585.60
  6. Step 6: Final answer
    x = 29,918.61

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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.