Home / 13,056.80-18,026.23-12,309.57

Finding the Fourth Proportional to 13,056.80, 18,026.23 and 12,309.57

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Solution

The fourth proportional to 13,056.80, 18,026.23 and 12,309.57 is: 16,994.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.80 : 18,026.23 = 12,309.57 : x
  2. Step 2: Convert to fraction form
    13,056.80/18,026.23 = 12,309.57/x
  3. Step 3: Cross multiply
    13,056.80x = 18,026.23 × 12,309.57
  4. Step 4: Simplify right side
    13,056.80x = 221,895,109.25
  5. Step 5: Solve for x
    x = 221,895,109.25/13,056.80
  6. Step 6: Final answer
    x = 16,994.61

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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.