Home / 13,871.51-19,140.82-8,206.57

Finding the Fourth Proportional to 13,871.51, 19,140.82 and 8,206.57

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Solution

The fourth proportional to 13,871.51, 19,140.82 and 8,206.57 is: 11,323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.51 : 19,140.82 = 8,206.57 : x
  2. Step 2: Convert to fraction form
    13,871.51/19,140.82 = 8,206.57/x
  3. Step 3: Cross multiply
    13,871.51x = 19,140.82 × 8,206.57
  4. Step 4: Simplify right side
    13,871.51x = 157,080,528.76
  5. Step 5: Solve for x
    x = 157,080,528.76/13,871.51
  6. Step 6: Final answer
    x = 11,323.97

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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.