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Finding the Fourth Proportional to 28,773.76, 39,715.24 and 25,784.48

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Solution

The fourth proportional to 28,773.76, 39,715.24 and 25,784.48 is: 35,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,773.76 : 39,715.24 = 25,784.48 : x
  2. Step 2: Convert to fraction form
    28,773.76/39,715.24 = 25,784.48/x
  3. Step 3: Cross multiply
    28,773.76x = 39,715.24 × 25,784.48
  4. Step 4: Simplify right side
    28,773.76x = 1,024,036,811.48
  5. Step 5: Solve for x
    x = 1,024,036,811.48/28,773.76
  6. Step 6: Final answer
    x = 35,589.26

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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.