Home / 30,984.73-42,735.06-20,897.19

Finding the Fourth Proportional to 30,984.73, 42,735.06 and 20,897.19

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Solution

The fourth proportional to 30,984.73, 42,735.06 and 20,897.19 is: 28,822.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,984.73 : 42,735.06 = 20,897.19 : x
  2. Step 2: Convert to fraction form
    30,984.73/42,735.06 = 20,897.19/x
  3. Step 3: Cross multiply
    30,984.73x = 42,735.06 × 20,897.19
  4. Step 4: Simplify right side
    30,984.73x = 893,042,668.48
  5. Step 5: Solve for x
    x = 893,042,668.48/30,984.73
  6. Step 6: Final answer
    x = 28,822.03

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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.