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Finding the Fourth Proportional to 28,297, 39,051.48 and 15,722.56

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Solution

The fourth proportional to 28,297, 39,051.48 and 15,722.56 is: 21,698.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297 : 39,051.48 = 15,722.56 : x
  2. Step 2: Convert to fraction form
    28,297/39,051.48 = 15,722.56/x
  3. Step 3: Cross multiply
    28,297x = 39,051.48 × 15,722.56
  4. Step 4: Simplify right side
    28,297x = 613,989,237.39
  5. Step 5: Solve for x
    x = 613,989,237.39/28,297
  6. Step 6: Final answer
    x = 21,698.03

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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.