Home / 28,573.20-42,859.80-7,796.70

Finding the Fourth Proportional to 28,573.20, 42,859.80 and 7,796.70

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Solution

The fourth proportional to 28,573.20, 42,859.80 and 7,796.70 is: 11,695.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.20 : 42,859.80 = 7,796.70 : x
  2. Step 2: Convert to fraction form
    28,573.20/42,859.80 = 7,796.70/x
  3. Step 3: Cross multiply
    28,573.20x = 42,859.80 × 7,796.70
  4. Step 4: Simplify right side
    28,573.20x = 334,165,002.66
  5. Step 5: Solve for x
    x = 334,165,002.66/28,573.20
  6. Step 6: Final answer
    x = 11,695.05

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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.