Home / 9,980.09-14,975.19-6,650.61

Finding the Fourth Proportional to 9,980.09, 14,975.19 and 6,650.61

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Solution

The fourth proportional to 9,980.09, 14,975.19 and 6,650.61 is: 9,979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.09 : 14,975.19 = 6,650.61 : x
  2. Step 2: Convert to fraction form
    9,980.09/14,975.19 = 6,650.61/x
  3. Step 3: Cross multiply
    9,980.09x = 14,975.19 × 6,650.61
  4. Step 4: Simplify right side
    9,980.09x = 99,594,148.37
  5. Step 5: Solve for x
    x = 99,594,148.37/9,980.09
  6. Step 6: Final answer
    x = 9,979.29

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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.