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Finding the Fourth Proportional to 36,000.40, 54,008.70 and 21,201.70

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Solution

The fourth proportional to 36,000.40, 54,008.70 and 21,201.70 is: 31,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,000.40 : 54,008.70 = 21,201.70 : x
  2. Step 2: Convert to fraction form
    36,000.40/54,008.70 = 21,201.70/x
  3. Step 3: Cross multiply
    36,000.40x = 54,008.70 × 21,201.70
  4. Step 4: Simplify right side
    36,000.40x = 1,145,076,254.79
  5. Step 5: Solve for x
    x = 1,145,076,254.79/36,000.40
  6. Step 6: Final answer
    x = 31,807.32

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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.