Home / 28,721.34-39,629.58-16,782.37

Finding the Fourth Proportional to 28,721.34, 39,629.58 and 16,782.37

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Solution

The fourth proportional to 28,721.34, 39,629.58 and 16,782.37 is: 23,156.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.34 : 39,629.58 = 16,782.37 : x
  2. Step 2: Convert to fraction form
    28,721.34/39,629.58 = 16,782.37/x
  3. Step 3: Cross multiply
    28,721.34x = 39,629.58 × 16,782.37
  4. Step 4: Simplify right side
    28,721.34x = 665,078,274.50
  5. Step 5: Solve for x
    x = 665,078,274.50/28,721.34
  6. Step 6: Final answer
    x = 23,156.24

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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.