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Finding the Fourth Proportional to 28,502.69, 42,754.03 and 7,726.19

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Solution

The fourth proportional to 28,502.69, 42,754.03 and 7,726.19 is: 11,589.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.69 : 42,754.03 = 7,726.19 : x
  2. Step 2: Convert to fraction form
    28,502.69/42,754.03 = 7,726.19/x
  3. Step 3: Cross multiply
    28,502.69x = 42,754.03 × 7,726.19
  4. Step 4: Simplify right side
    28,502.69x = 330,325,525.96
  5. Step 5: Solve for x
    x = 330,325,525.96/28,502.69
  6. Step 6: Final answer
    x = 11,589.28

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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.