Home / 15,693.45-21,657.09-8,620.03

Finding the Fourth Proportional to 15,693.45, 21,657.09 and 8,620.03

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Solution

The fourth proportional to 15,693.45, 21,657.09 and 8,620.03 is: 11,895.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.45 : 21,657.09 = 8,620.03 : x
  2. Step 2: Convert to fraction form
    15,693.45/21,657.09 = 8,620.03/x
  3. Step 3: Cross multiply
    15,693.45x = 21,657.09 × 8,620.03
  4. Step 4: Simplify right side
    15,693.45x = 186,684,765.51
  5. Step 5: Solve for x
    x = 186,684,765.51/15,693.45
  6. Step 6: Final answer
    x = 11,895.71

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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.