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Finding the Fourth Proportional to 28,356.65, 42,536.93 and 9,629.04

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Solution

The fourth proportional to 28,356.65, 42,536.93 and 9,629.04 is: 14,444.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.65 : 42,536.93 = 9,629.04 : x
  2. Step 2: Convert to fraction form
    28,356.65/42,536.93 = 9,629.04/x
  3. Step 3: Cross multiply
    28,356.65x = 42,536.93 × 9,629.04
  4. Step 4: Simplify right side
    28,356.65x = 409,589,752.30
  5. Step 5: Solve for x
    x = 409,589,752.30/28,356.65
  6. Step 6: Final answer
    x = 14,444.22

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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.