Home / 21,759.36-30,030.33-12,809.07

Finding the Fourth Proportional to 21,759.36, 30,030.33 and 12,809.07

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Solution

The fourth proportional to 21,759.36, 30,030.33 and 12,809.07 is: 17,677.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.36 : 30,030.33 = 12,809.07 : x
  2. Step 2: Convert to fraction form
    21,759.36/30,030.33 = 12,809.07/x
  3. Step 3: Cross multiply
    21,759.36x = 30,030.33 × 12,809.07
  4. Step 4: Simplify right side
    21,759.36x = 384,660,599.09
  5. Step 5: Solve for x
    x = 384,660,599.09/21,759.36
  6. Step 6: Final answer
    x = 17,677.94

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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.