Home / 30,172.89-45,257.46-13,528.44

Finding the Fourth Proportional to 30,172.89, 45,257.46 and 13,528.44

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Solution

The fourth proportional to 30,172.89, 45,257.46 and 13,528.44 is: 20,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.89 : 45,257.46 = 13,528.44 : x
  2. Step 2: Convert to fraction form
    30,172.89/45,257.46 = 13,528.44/x
  3. Step 3: Cross multiply
    30,172.89x = 45,257.46 × 13,528.44
  4. Step 4: Simplify right side
    30,172.89x = 612,262,832.16
  5. Step 5: Solve for x
    x = 612,262,832.16/30,172.89
  6. Step 6: Final answer
    x = 20,291.82

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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.