Home / 13,291.02-18,328.82-8,745.57

Finding the Fourth Proportional to 13,291.02, 18,328.82 and 8,745.57

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Solution

The fourth proportional to 13,291.02, 18,328.82 and 8,745.57 is: 12,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.02 : 18,328.82 = 8,745.57 : x
  2. Step 2: Convert to fraction form
    13,291.02/18,328.82 = 8,745.57/x
  3. Step 3: Cross multiply
    13,291.02x = 18,328.82 × 8,745.57
  4. Step 4: Simplify right side
    13,291.02x = 160,295,934.60
  5. Step 5: Solve for x
    x = 160,295,934.60/13,291.02
  6. Step 6: Final answer
    x = 12,060.47

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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.