Home / 30,348.18-45,448.38-20,963.16

Finding the Fourth Proportional to 30,348.18, 45,448.38 and 20,963.16

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Solution

The fourth proportional to 30,348.18, 45,448.38 and 20,963.16 is: 31,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.18 : 45,448.38 = 20,963.16 : x
  2. Step 2: Convert to fraction form
    30,348.18/45,448.38 = 20,963.16/x
  3. Step 3: Cross multiply
    30,348.18x = 45,448.38 × 20,963.16
  4. Step 4: Simplify right side
    30,348.18x = 952,741,661.68
  5. Step 5: Solve for x
    x = 952,741,661.68/30,348.18
  6. Step 6: Final answer
    x = 31,393.70

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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.