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Finding the Fourth Proportional to 28,303.93, 42,455.75 and 7,243.93

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Solution

The fourth proportional to 28,303.93, 42,455.75 and 7,243.93 is: 10,865.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,303.93 : 42,455.75 = 7,243.93 : x
  2. Step 2: Convert to fraction form
    28,303.93/42,455.75 = 7,243.93/x
  3. Step 3: Cross multiply
    28,303.93x = 42,455.75 × 7,243.93
  4. Step 4: Simplify right side
    28,303.93x = 307,546,497.95
  5. Step 5: Solve for x
    x = 307,546,497.95/28,303.93
  6. Step 6: Final answer
    x = 10,865.86

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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.