Home / 30,421.80-45,611.10-11,694.60

Finding the Fourth Proportional to 30,421.80, 45,611.10 and 11,694.60

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Solution

The fourth proportional to 30,421.80, 45,611.10 and 11,694.60 is: 17,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.80 : 45,611.10 = 11,694.60 : x
  2. Step 2: Convert to fraction form
    30,421.80/45,611.10 = 11,694.60/x
  3. Step 3: Cross multiply
    30,421.80x = 45,611.10 × 11,694.60
  4. Step 4: Simplify right side
    30,421.80x = 533,403,570.06
  5. Step 5: Solve for x
    x = 533,403,570.06/30,421.80
  6. Step 6: Final answer
    x = 17,533.60

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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.