Home / 30,640.32-42,287.60-17,211.58

Finding the Fourth Proportional to 30,640.32, 42,287.60 and 17,211.58

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Solution

The fourth proportional to 30,640.32, 42,287.60 and 17,211.58 is: 23,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640.32 : 42,287.60 = 17,211.58 : x
  2. Step 2: Convert to fraction form
    30,640.32/42,287.60 = 17,211.58/x
  3. Step 3: Cross multiply
    30,640.32x = 42,287.60 × 17,211.58
  4. Step 4: Simplify right side
    30,640.32x = 727,836,347.72
  5. Step 5: Solve for x
    x = 727,836,347.72/30,640.32
  6. Step 6: Final answer
    x = 23,754.20

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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.