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Finding the Fourth Proportional to 15,796.26, 23,686.10 and 7,890.30

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Solution

The fourth proportional to 15,796.26, 23,686.10 and 7,890.30 is: 11,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.26 : 23,686.10 = 7,890.30 : x
  2. Step 2: Convert to fraction form
    15,796.26/23,686.10 = 7,890.30/x
  3. Step 3: Cross multiply
    15,796.26x = 23,686.10 × 7,890.30
  4. Step 4: Simplify right side
    15,796.26x = 186,890,434.83
  5. Step 5: Solve for x
    x = 186,890,434.83/15,796.26
  6. Step 6: Final answer
    x = 11,831.31

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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.