Home / 13,670.24-18,866.36-8,368.60

Finding the Fourth Proportional to 13,670.24, 18,866.36 and 8,368.60

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Solution

The fourth proportional to 13,670.24, 18,866.36 and 8,368.60 is: 11,549.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.24 : 18,866.36 = 8,368.60 : x
  2. Step 2: Convert to fraction form
    13,670.24/18,866.36 = 8,368.60/x
  3. Step 3: Cross multiply
    13,670.24x = 18,866.36 × 8,368.60
  4. Step 4: Simplify right side
    13,670.24x = 157,885,020.30
  5. Step 5: Solve for x
    x = 157,885,020.30/13,670.24
  6. Step 6: Final answer
    x = 11,549.54

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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.