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Finding the Fourth Proportional to 15,605.31, 23,407.74 and 3,918.54

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Solution

The fourth proportional to 15,605.31, 23,407.74 and 3,918.54 is: 5,877.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.31 : 23,407.74 = 3,918.54 : x
  2. Step 2: Convert to fraction form
    15,605.31/23,407.74 = 3,918.54/x
  3. Step 3: Cross multiply
    15,605.31x = 23,407.74 × 3,918.54
  4. Step 4: Simplify right side
    15,605.31x = 91,724,165.50
  5. Step 5: Solve for x
    x = 91,724,165.50/15,605.31
  6. Step 6: Final answer
    x = 5,877.75

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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.