Home / 21,091.95-31,653.46-9,998.59

Finding the Fourth Proportional to 21,091.95, 31,653.46 and 9,998.59

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Solution

The fourth proportional to 21,091.95, 31,653.46 and 9,998.59 is: 15,005.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.95 : 31,653.46 = 9,998.59 : x
  2. Step 2: Convert to fraction form
    21,091.95/31,653.46 = 9,998.59/x
  3. Step 3: Cross multiply
    21,091.95x = 31,653.46 × 9,998.59
  4. Step 4: Simplify right side
    21,091.95x = 316,489,968.62
  5. Step 5: Solve for x
    x = 316,489,968.62/21,091.95
  6. Step 6: Final answer
    x = 15,005.25

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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.