Home / 30,784.90-42,480.60-17,359.48

Finding the Fourth Proportional to 30,784.90, 42,480.60 and 17,359.48

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Solution

The fourth proportional to 30,784.90, 42,480.60 and 17,359.48 is: 23,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,784.90 : 42,480.60 = 17,359.48 : x
  2. Step 2: Convert to fraction form
    30,784.90/42,480.60 = 17,359.48/x
  3. Step 3: Cross multiply
    30,784.90x = 42,480.60 × 17,359.48
  4. Step 4: Simplify right side
    30,784.90x = 737,441,126.09
  5. Step 5: Solve for x
    x = 737,441,126.09/30,784.90
  6. Step 6: Final answer
    x = 23,954.64

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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.