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Finding the Fourth Proportional to 37,209.60, 55,814.40 and 21,657.60

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Solution

The fourth proportional to 37,209.60, 55,814.40 and 21,657.60 is: 32,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,209.60 : 55,814.40 = 21,657.60 : x
  2. Step 2: Convert to fraction form
    37,209.60/55,814.40 = 21,657.60/x
  3. Step 3: Cross multiply
    37,209.60x = 55,814.40 × 21,657.60
  4. Step 4: Simplify right side
    37,209.60x = 1,208,805,949.44
  5. Step 5: Solve for x
    x = 1,208,805,949.44/37,209.60
  6. Step 6: Final answer
    x = 32,486.40

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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.