Home / 28,739.84-39,660.80-16,164.72

Finding the Fourth Proportional to 28,739.84, 39,660.80 and 16,164.72

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Solution

The fourth proportional to 28,739.84, 39,660.80 and 16,164.72 is: 22,307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,739.84 : 39,660.80 = 16,164.72 : x
  2. Step 2: Convert to fraction form
    28,739.84/39,660.80 = 16,164.72/x
  3. Step 3: Cross multiply
    28,739.84x = 39,660.80 × 16,164.72
  4. Step 4: Simplify right side
    28,739.84x = 641,105,726.98
  5. Step 5: Solve for x
    x = 641,105,726.98/28,739.84
  6. Step 6: Final answer
    x = 22,307.21

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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.