Home / 13,312.08-18,379.44-8,283.60

Finding the Fourth Proportional to 13,312.08, 18,379.44 and 8,283.60

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Solution

The fourth proportional to 13,312.08, 18,379.44 and 8,283.60 is: 11,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.08 : 18,379.44 = 8,283.60 : x
  2. Step 2: Convert to fraction form
    13,312.08/18,379.44 = 8,283.60/x
  3. Step 3: Cross multiply
    13,312.08x = 18,379.44 × 8,283.60
  4. Step 4: Simplify right side
    13,312.08x = 152,247,929.18
  5. Step 5: Solve for x
    x = 152,247,929.18/13,312.08
  6. Step 6: Final answer
    x = 11,436.82

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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.