Home / 13,409.67-18,502.65-8,104.77

Finding the Fourth Proportional to 13,409.67, 18,502.65 and 8,104.77

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Solution

The fourth proportional to 13,409.67, 18,502.65 and 8,104.77 is: 11,182.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.67 : 18,502.65 = 8,104.77 : x
  2. Step 2: Convert to fraction form
    13,409.67/18,502.65 = 8,104.77/x
  3. Step 3: Cross multiply
    13,409.67x = 18,502.65 × 8,104.77
  4. Step 4: Simplify right side
    13,409.67x = 149,959,722.64
  5. Step 5: Solve for x
    x = 149,959,722.64/13,409.67
  6. Step 6: Final answer
    x = 11,182.95

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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.