Home / 13,142.06-18,114.44-9,314.98

Finding the Fourth Proportional to 13,142.06, 18,114.44 and 9,314.98

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Solution

The fourth proportional to 13,142.06, 18,114.44 and 9,314.98 is: 12,839.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.06 : 18,114.44 = 9,314.98 : x
  2. Step 2: Convert to fraction form
    13,142.06/18,114.44 = 9,314.98/x
  3. Step 3: Cross multiply
    13,142.06x = 18,114.44 × 9,314.98
  4. Step 4: Simplify right side
    13,142.06x = 168,735,554.45
  5. Step 5: Solve for x
    x = 168,735,554.45/13,142.06
  6. Step 6: Final answer
    x = 12,839.35

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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.