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Finding the Fourth Proportional to 37,257.40, 55,869.90 and 12,287.80

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Solution

The fourth proportional to 37,257.40, 55,869.90 and 12,287.80 is: 18,426.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,257.40 : 55,869.90 = 12,287.80 : x
  2. Step 2: Convert to fraction form
    37,257.40/55,869.90 = 12,287.80/x
  3. Step 3: Cross multiply
    37,257.40x = 55,869.90 × 12,287.80
  4. Step 4: Simplify right side
    37,257.40x = 686,518,157.22
  5. Step 5: Solve for x
    x = 686,518,157.22/37,257.40
  6. Step 6: Final answer
    x = 18,426.36

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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.