Home / 13,023.88-17,980.66-8,555.44

Finding the Fourth Proportional to 13,023.88, 17,980.66 and 8,555.44

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Solution

The fourth proportional to 13,023.88, 17,980.66 and 8,555.44 is: 11,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,023.88 : 17,980.66 = 8,555.44 : x
  2. Step 2: Convert to fraction form
    13,023.88/17,980.66 = 8,555.44/x
  3. Step 3: Cross multiply
    13,023.88x = 17,980.66 × 8,555.44
  4. Step 4: Simplify right side
    13,023.88x = 153,832,457.79
  5. Step 5: Solve for x
    x = 153,832,457.79/13,023.88
  6. Step 6: Final answer
    x = 11,811.57

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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.