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Finding the Fourth Proportional to 15,059.93, 20,782.91 and 8,345.57

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Solution

The fourth proportional to 15,059.93, 20,782.91 and 8,345.57 is: 11,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.93 : 20,782.91 = 8,345.57 : x
  2. Step 2: Convert to fraction form
    15,059.93/20,782.91 = 8,345.57/x
  3. Step 3: Cross multiply
    15,059.93x = 20,782.91 × 8,345.57
  4. Step 4: Simplify right side
    15,059.93x = 173,445,147.16
  5. Step 5: Solve for x
    x = 173,445,147.16/15,059.93
  6. Step 6: Final answer
    x = 11,517.00

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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.