Home / 21,970.09-33,127.49-20,133.01

Finding the Fourth Proportional to 21,970.09, 33,127.49 and 20,133.01

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Solution

The fourth proportional to 21,970.09, 33,127.49 and 20,133.01 is: 30,357.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.09 : 33,127.49 = 20,133.01 : x
  2. Step 2: Convert to fraction form
    21,970.09/33,127.49 = 20,133.01/x
  3. Step 3: Cross multiply
    21,970.09x = 33,127.49 × 20,133.01
  4. Step 4: Simplify right side
    21,970.09x = 666,956,087.44
  5. Step 5: Solve for x
    x = 666,956,087.44/21,970.09
  6. Step 6: Final answer
    x = 30,357.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.