Home / 21,975.36-32,973.12-11,983.20

Finding the Fourth Proportional to 21,975.36, 32,973.12 and 11,983.20

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Solution

The fourth proportional to 21,975.36, 32,973.12 and 11,983.20 is: 17,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.36 : 32,973.12 = 11,983.20 : x
  2. Step 2: Convert to fraction form
    21,975.36/32,973.12 = 11,983.20/x
  3. Step 3: Cross multiply
    21,975.36x = 32,973.12 × 11,983.20
  4. Step 4: Simplify right side
    21,975.36x = 395,123,491.58
  5. Step 5: Solve for x
    x = 395,123,491.58/21,975.36
  6. Step 6: Final answer
    x = 17,980.30

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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.