Home / 8,728.30-13,070.58-6,889.40

Finding the Fourth Proportional to 8,728.30, 13,070.58 and 6,889.40

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Solution

The fourth proportional to 8,728.30, 13,070.58 and 6,889.40 is: 10,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.30 : 13,070.58 = 6,889.40 : x
  2. Step 2: Convert to fraction form
    8,728.30/13,070.58 = 6,889.40/x
  3. Step 3: Cross multiply
    8,728.30x = 13,070.58 × 6,889.40
  4. Step 4: Simplify right side
    8,728.30x = 90,048,453.85
  5. Step 5: Solve for x
    x = 90,048,453.85/8,728.30
  6. Step 6: Final answer
    x = 10,316.84

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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.