Home / 28,778.57-39,710.88-16,028.63

Finding the Fourth Proportional to 28,778.57, 39,710.88 and 16,028.63

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Solution

The fourth proportional to 28,778.57, 39,710.88 and 16,028.63 is: 22,117.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.57 : 39,710.88 = 16,028.63 : x
  2. Step 2: Convert to fraction form
    28,778.57/39,710.88 = 16,028.63/x
  3. Step 3: Cross multiply
    28,778.57x = 39,710.88 × 16,028.63
  4. Step 4: Simplify right side
    28,778.57x = 636,510,803.94
  5. Step 5: Solve for x
    x = 636,510,803.94/28,778.57
  6. Step 6: Final answer
    x = 22,117.53

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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.