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Finding the Fourth Proportional to 18,804.58, 28,210.43 and 7,560.79

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Solution

The fourth proportional to 18,804.58, 28,210.43 and 7,560.79 is: 11,342.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.58 : 28,210.43 = 7,560.79 : x
  2. Step 2: Convert to fraction form
    18,804.58/28,210.43 = 7,560.79/x
  3. Step 3: Cross multiply
    18,804.58x = 28,210.43 × 7,560.79
  4. Step 4: Simplify right side
    18,804.58x = 213,293,085.42
  5. Step 5: Solve for x
    x = 213,293,085.42/18,804.58
  6. Step 6: Final answer
    x = 11,342.62

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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.