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Finding the Fourth Proportional to 36,098.40, 49,814.01 and 20,990.28

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Solution

The fourth proportional to 36,098.40, 49,814.01 and 20,990.28 is: 28,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,098.40 : 49,814.01 = 20,990.28 : x
  2. Step 2: Convert to fraction form
    36,098.40/49,814.01 = 20,990.28/x
  3. Step 3: Cross multiply
    36,098.40x = 49,814.01 × 20,990.28
  4. Step 4: Simplify right side
    36,098.40x = 1,045,610,017.82
  5. Step 5: Solve for x
    x = 1,045,610,017.82/36,098.40
  6. Step 6: Final answer
    x = 28,965.55

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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.