Home / 30,511.52-42,125.48-20,948.33

Finding the Fourth Proportional to 30,511.52, 42,125.48 and 20,948.33

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Solution

The fourth proportional to 30,511.52, 42,125.48 and 20,948.33 is: 28,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.52 : 42,125.48 = 20,948.33 : x
  2. Step 2: Convert to fraction form
    30,511.52/42,125.48 = 20,948.33/x
  3. Step 3: Cross multiply
    30,511.52x = 42,125.48 × 20,948.33
  4. Step 4: Simplify right side
    30,511.52x = 882,458,219.64
  5. Step 5: Solve for x
    x = 882,458,219.64/30,511.52
  6. Step 6: Final answer
    x = 28,922.13

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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.