Home / 30,136.04-41,621.77-20,559.48

Finding the Fourth Proportional to 30,136.04, 41,621.77 and 20,559.48

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Solution

The fourth proportional to 30,136.04, 41,621.77 and 20,559.48 is: 28,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,136.04 : 41,621.77 = 20,559.48 : x
  2. Step 2: Convert to fraction form
    30,136.04/41,621.77 = 20,559.48/x
  3. Step 3: Cross multiply
    30,136.04x = 41,621.77 × 20,559.48
  4. Step 4: Simplify right side
    30,136.04x = 855,721,947.88
  5. Step 5: Solve for x
    x = 855,721,947.88/30,136.04
  6. Step 6: Final answer
    x = 28,395.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.