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Finding the Fourth Proportional to 43,590.70, 65,392.59 and 18,630.64

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Solution

The fourth proportional to 43,590.70, 65,392.59 and 18,630.64 is: 27,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,590.70 : 65,392.59 = 18,630.64 : x
  2. Step 2: Convert to fraction form
    43,590.70/65,392.59 = 18,630.64/x
  3. Step 3: Cross multiply
    43,590.70x = 65,392.59 × 18,630.64
  4. Step 4: Simplify right side
    43,590.70x = 1,218,305,802.96
  5. Step 5: Solve for x
    x = 1,218,305,802.96/43,590.70
  6. Step 6: Final answer
    x = 27,948.76

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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.