Home / 39,590.60-54,635.04-21,685.64

Finding the Fourth Proportional to 39,590.60, 54,635.04 and 21,685.64

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Solution

The fourth proportional to 39,590.60, 54,635.04 and 21,685.64 is: 29,926.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,590.60 : 54,635.04 = 21,685.64 : x
  2. Step 2: Convert to fraction form
    39,590.60/54,635.04 = 21,685.64/x
  3. Step 3: Cross multiply
    39,590.60x = 54,635.04 × 21,685.64
  4. Step 4: Simplify right side
    39,590.60x = 1,184,795,535.65
  5. Step 5: Solve for x
    x = 1,184,795,535.65/39,590.60
  6. Step 6: Final answer
    x = 29,926.19

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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.