Home / 13,607.76-18,768.48-9,136.56

Finding the Fourth Proportional to 13,607.76, 18,768.48 and 9,136.56

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Solution

The fourth proportional to 13,607.76, 18,768.48 and 9,136.56 is: 12,601.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.76 : 18,768.48 = 9,136.56 : x
  2. Step 2: Convert to fraction form
    13,607.76/18,768.48 = 9,136.56/x
  3. Step 3: Cross multiply
    13,607.76x = 18,768.48 × 9,136.56
  4. Step 4: Simplify right side
    13,607.76x = 171,479,343.63
  5. Step 5: Solve for x
    x = 171,479,343.63/13,607.76
  6. Step 6: Final answer
    x = 12,601.58

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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.