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Finding the Fourth Proportional to 36,555.40, 54,890.70 and 21,003.40

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Solution

The fourth proportional to 36,555.40, 54,890.70 and 21,003.40 is: 31,538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,555.40 : 54,890.70 = 21,003.40 : x
  2. Step 2: Convert to fraction form
    36,555.40/54,890.70 = 21,003.40/x
  3. Step 3: Cross multiply
    36,555.40x = 54,890.70 × 21,003.40
  4. Step 4: Simplify right side
    36,555.40x = 1,152,891,328.38
  5. Step 5: Solve for x
    x = 1,152,891,328.38/36,555.40
  6. Step 6: Final answer
    x = 31,538.19

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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.