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Finding the Fourth Proportional to 36,807.40, 55,268.70 and 21,255.40

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Solution

The fourth proportional to 36,807.40, 55,268.70 and 21,255.40 is: 31,916.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,807.40 : 55,268.70 = 21,255.40 : x
  2. Step 2: Convert to fraction form
    36,807.40/55,268.70 = 21,255.40/x
  3. Step 3: Cross multiply
    36,807.40x = 55,268.70 × 21,255.40
  4. Step 4: Simplify right side
    36,807.40x = 1,174,758,325.98
  5. Step 5: Solve for x
    x = 1,174,758,325.98/36,807.40
  6. Step 6: Final answer
    x = 31,916.36

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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.