Home / 15,782.07-21,778.62-8,708.40

Finding the Fourth Proportional to 15,782.07, 21,778.62 and 8,708.40

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Solution

The fourth proportional to 15,782.07, 21,778.62 and 8,708.40 is: 12,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.07 : 21,778.62 = 8,708.40 : x
  2. Step 2: Convert to fraction form
    15,782.07/21,778.62 = 8,708.40/x
  3. Step 3: Cross multiply
    15,782.07x = 21,778.62 × 8,708.40
  4. Step 4: Simplify right side
    15,782.07x = 189,656,934.41
  5. Step 5: Solve for x
    x = 189,656,934.41/15,782.07
  6. Step 6: Final answer
    x = 12,017.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.