Home / 28,869.75-39,873.06-19,421.91

Finding the Fourth Proportional to 28,869.75, 39,873.06 and 19,421.91

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Solution

The fourth proportional to 28,869.75, 39,873.06 and 19,421.91 is: 26,824.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.75 : 39,873.06 = 19,421.91 : x
  2. Step 2: Convert to fraction form
    28,869.75/39,873.06 = 19,421.91/x
  3. Step 3: Cross multiply
    28,869.75x = 39,873.06 × 19,421.91
  4. Step 4: Simplify right side
    28,869.75x = 774,410,982.74
  5. Step 5: Solve for x
    x = 774,410,982.74/28,869.75
  6. Step 6: Final answer
    x = 26,824.31

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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.