Home / 13,142.54-18,136.02-7,173.05

Finding the Fourth Proportional to 13,142.54, 18,136.02 and 7,173.05

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Solution

The fourth proportional to 13,142.54, 18,136.02 and 7,173.05 is: 9,898.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.54 : 18,136.02 = 7,173.05 : x
  2. Step 2: Convert to fraction form
    13,142.54/18,136.02 = 7,173.05/x
  3. Step 3: Cross multiply
    13,142.54x = 18,136.02 × 7,173.05
  4. Step 4: Simplify right side
    13,142.54x = 130,090,596.70
  5. Step 5: Solve for x
    x = 130,090,596.70/13,142.54
  6. Step 6: Final answer
    x = 9,898.43

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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.