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Finding the Fourth Proportional to 28,573.29, 42,859.53 and 7,796.79

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Solution

The fourth proportional to 28,573.29, 42,859.53 and 7,796.79 is: 11,695.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.29 : 42,859.53 = 7,796.79 : x
  2. Step 2: Convert to fraction form
    28,573.29/42,859.53 = 7,796.79/x
  3. Step 3: Cross multiply
    28,573.29x = 42,859.53 × 7,796.79
  4. Step 4: Simplify right side
    28,573.29x = 334,166,754.91
  5. Step 5: Solve for x
    x = 334,166,754.91/28,573.29
  6. Step 6: Final answer
    x = 11,695.07

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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.