Home / 11,381.80-17,058.12-8,779.28

Finding the Fourth Proportional to 11,381.80, 17,058.12 and 8,779.28

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Solution

The fourth proportional to 11,381.80, 17,058.12 and 8,779.28 is: 13,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.80 : 17,058.12 = 8,779.28 : x
  2. Step 2: Convert to fraction form
    11,381.80/17,058.12 = 8,779.28/x
  3. Step 3: Cross multiply
    11,381.80x = 17,058.12 × 8,779.28
  4. Step 4: Simplify right side
    11,381.80x = 149,758,011.75
  5. Step 5: Solve for x
    x = 149,758,011.75/11,381.80
  6. Step 6: Final answer
    x = 13,157.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.