Home / 21,815.36-32,720.88-7,021.52

Finding the Fourth Proportional to 21,815.36, 32,720.88 and 7,021.52

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Solution

The fourth proportional to 21,815.36, 32,720.88 and 7,021.52 is: 10,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.36 : 32,720.88 = 7,021.52 : x
  2. Step 2: Convert to fraction form
    21,815.36/32,720.88 = 7,021.52/x
  3. Step 3: Cross multiply
    21,815.36x = 32,720.88 × 7,021.52
  4. Step 4: Simplify right side
    21,815.36x = 229,750,313.34
  5. Step 5: Solve for x
    x = 229,750,313.34/21,815.36
  6. Step 6: Final answer
    x = 10,531.58

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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.