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Finding the Fourth Proportional to 36,155.28, 49,890.96 and 21,047.28

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Solution

The fourth proportional to 36,155.28, 49,890.96 and 21,047.28 is: 29,043.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,155.28 : 49,890.96 = 21,047.28 : x
  2. Step 2: Convert to fraction form
    36,155.28/49,890.96 = 21,047.28/x
  3. Step 3: Cross multiply
    36,155.28x = 49,890.96 × 21,047.28
  4. Step 4: Simplify right side
    36,155.28x = 1,050,069,004.59
  5. Step 5: Solve for x
    x = 1,050,069,004.59/36,155.28
  6. Step 6: Final answer
    x = 29,043.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.