Home / 15,059.41-20,782.74-8,345.77

Finding the Fourth Proportional to 15,059.41, 20,782.74 and 8,345.77

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Solution

The fourth proportional to 15,059.41, 20,782.74 and 8,345.77 is: 11,517.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.41 : 20,782.74 = 8,345.77 : x
  2. Step 2: Convert to fraction form
    15,059.41/20,782.74 = 8,345.77/x
  3. Step 3: Cross multiply
    15,059.41x = 20,782.74 × 8,345.77
  4. Step 4: Simplify right side
    15,059.41x = 173,447,968.01
  5. Step 5: Solve for x
    x = 173,447,968.01/15,059.41
  6. Step 6: Final answer
    x = 11,517.58

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1.5x scale

Why These Related Problems?

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