Home / 12,645.09-17,450.30-6,980.02

Finding the Fourth Proportional to 12,645.09, 17,450.30 and 6,980.02

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Solution

The fourth proportional to 12,645.09, 17,450.30 and 6,980.02 is: 9,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.09 : 17,450.30 = 6,980.02 : x
  2. Step 2: Convert to fraction form
    12,645.09/17,450.30 = 6,980.02/x
  3. Step 3: Cross multiply
    12,645.09x = 17,450.30 × 6,980.02
  4. Step 4: Simplify right side
    12,645.09x = 121,803,416.83
  5. Step 5: Solve for x
    x = 121,803,416.83/12,645.09
  6. Step 6: Final answer
    x = 9,632.47

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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.