Home / 28,409.29-39,205.08-15,662.91

Finding the Fourth Proportional to 28,409.29, 39,205.08 and 15,662.91

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Solution

The fourth proportional to 28,409.29, 39,205.08 and 15,662.91 is: 21,614.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.29 : 39,205.08 = 15,662.91 : x
  2. Step 2: Convert to fraction form
    28,409.29/39,205.08 = 15,662.91/x
  3. Step 3: Cross multiply
    28,409.29x = 39,205.08 × 15,662.91
  4. Step 4: Simplify right side
    28,409.29x = 614,065,786.60
  5. Step 5: Solve for x
    x = 614,065,786.60/28,409.29
  6. Step 6: Final answer
    x = 21,614.97

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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.