Home / 28,716.23-39,628.39-16,140.98

Finding the Fourth Proportional to 28,716.23, 39,628.39 and 16,140.98

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Solution

The fourth proportional to 28,716.23, 39,628.39 and 16,140.98 is: 22,274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,716.23 : 39,628.39 = 16,140.98 : x
  2. Step 2: Convert to fraction form
    28,716.23/39,628.39 = 16,140.98/x
  3. Step 3: Cross multiply
    28,716.23x = 39,628.39 × 16,140.98
  4. Step 4: Simplify right side
    28,716.23x = 639,641,050.42
  5. Step 5: Solve for x
    x = 639,641,050.42/28,716.23
  6. Step 6: Final answer
    x = 22,274.55

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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.