Home / 30,708.30-45,953.10-21,304.20

Finding the Fourth Proportional to 30,708.30, 45,953.10 and 21,304.20

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Solution

The fourth proportional to 30,708.30, 45,953.10 and 21,304.20 is: 31,880.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,708.30 : 45,953.10 = 21,304.20 : x
  2. Step 2: Convert to fraction form
    30,708.30/45,953.10 = 21,304.20/x
  3. Step 3: Cross multiply
    30,708.30x = 45,953.10 × 21,304.20
  4. Step 4: Simplify right side
    30,708.30x = 978,994,033.02
  5. Step 5: Solve for x
    x = 978,994,033.02/30,708.30
  6. Step 6: Final answer
    x = 31,880.44

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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.