Home / 13,220.27-19,909.55-12,039.29

Finding the Fourth Proportional to 13,220.27, 19,909.55 and 12,039.29

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Solution

The fourth proportional to 13,220.27, 19,909.55 and 12,039.29 is: 18,131.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.27 : 19,909.55 = 12,039.29 : x
  2. Step 2: Convert to fraction form
    13,220.27/19,909.55 = 12,039.29/x
  3. Step 3: Cross multiply
    13,220.27x = 19,909.55 × 12,039.29
  4. Step 4: Simplify right side
    13,220.27x = 239,696,846.22
  5. Step 5: Solve for x
    x = 239,696,846.22/13,220.27
  6. Step 6: Final answer
    x = 18,131.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.