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Finding the Fourth Proportional to 28,707.49, 43,054.75 and 10,239.49

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Solution

The fourth proportional to 28,707.49, 43,054.75 and 10,239.49 is: 15,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,707.49 : 43,054.75 = 10,239.49 : x
  2. Step 2: Convert to fraction form
    28,707.49/43,054.75 = 10,239.49/x
  3. Step 3: Cross multiply
    28,707.49x = 43,054.75 × 10,239.49
  4. Step 4: Simplify right side
    28,707.49x = 440,858,682.08
  5. Step 5: Solve for x
    x = 440,858,682.08/28,707.49
  6. Step 6: Final answer
    x = 15,356.92

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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.