Home / 13,136.01-18,130.74-8,660.55

Finding the Fourth Proportional to 13,136.01, 18,130.74 and 8,660.55

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Solution

The fourth proportional to 13,136.01, 18,130.74 and 8,660.55 is: 11,953.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.01 : 18,130.74 = 8,660.55 : x
  2. Step 2: Convert to fraction form
    13,136.01/18,130.74 = 8,660.55/x
  3. Step 3: Cross multiply
    13,136.01x = 18,130.74 × 8,660.55
  4. Step 4: Simplify right side
    13,136.01x = 157,022,180.31
  5. Step 5: Solve for x
    x = 157,022,180.31/13,136.01
  6. Step 6: Final answer
    x = 11,953.57

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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.