Home / 13,261.68-18,302.85-8,559.63

Finding the Fourth Proportional to 13,261.68, 18,302.85 and 8,559.63

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Solution

The fourth proportional to 13,261.68, 18,302.85 and 8,559.63 is: 11,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.68 : 18,302.85 = 8,559.63 : x
  2. Step 2: Convert to fraction form
    13,261.68/18,302.85 = 8,559.63/x
  3. Step 3: Cross multiply
    13,261.68x = 18,302.85 × 8,559.63
  4. Step 4: Simplify right side
    13,261.68x = 156,665,623.95
  5. Step 5: Solve for x
    x = 156,665,623.95/13,261.68
  6. Step 6: Final answer
    x = 11,813.41

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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.