Home / 28,710.90-39,620.84-16,135.64

Finding the Fourth Proportional to 28,710.90, 39,620.84 and 16,135.64

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Solution

The fourth proportional to 28,710.90, 39,620.84 and 16,135.64 is: 22,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,710.90 : 39,620.84 = 16,135.64 : x
  2. Step 2: Convert to fraction form
    28,710.90/39,620.84 = 16,135.64/x
  3. Step 3: Cross multiply
    28,710.90x = 39,620.84 × 16,135.64
  4. Step 4: Simplify right side
    28,710.90x = 639,307,610.74
  5. Step 5: Solve for x
    x = 639,307,610.74/28,710.90
  6. Step 6: Final answer
    x = 22,267.07

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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.