Home / 30,615.77-45,942.05-13,085.60

Finding the Fourth Proportional to 30,615.77, 45,942.05 and 13,085.60

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Solution

The fourth proportional to 30,615.77, 45,942.05 and 13,085.60 is: 19,636.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.77 : 45,942.05 = 13,085.60 : x
  2. Step 2: Convert to fraction form
    30,615.77/45,942.05 = 13,085.60/x
  3. Step 3: Cross multiply
    30,615.77x = 45,942.05 × 13,085.60
  4. Step 4: Simplify right side
    30,615.77x = 601,179,350.91
  5. Step 5: Solve for x
    x = 601,179,350.91/30,615.77
  6. Step 6: Final answer
    x = 19,636.26

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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.