Home / 28,220.58-42,322.23-19,511.46

Finding the Fourth Proportional to 28,220.58, 42,322.23 and 19,511.46

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Solution

The fourth proportional to 28,220.58, 42,322.23 and 19,511.46 is: 29,261.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.58 : 42,322.23 = 19,511.46 : x
  2. Step 2: Convert to fraction form
    28,220.58/42,322.23 = 19,511.46/x
  3. Step 3: Cross multiply
    28,220.58x = 42,322.23 × 19,511.46
  4. Step 4: Simplify right side
    28,220.58x = 825,768,497.76
  5. Step 5: Solve for x
    x = 825,768,497.76/28,220.58
  6. Step 6: Final answer
    x = 29,261.22

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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.