Home / 28,709.16-39,618.30-16,774.32

Finding the Fourth Proportional to 28,709.16, 39,618.30 and 16,774.32

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Solution

The fourth proportional to 28,709.16, 39,618.30 and 16,774.32 is: 23,148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.16 : 39,618.30 = 16,774.32 : x
  2. Step 2: Convert to fraction form
    28,709.16/39,618.30 = 16,774.32/x
  3. Step 3: Cross multiply
    28,709.16x = 39,618.30 × 16,774.32
  4. Step 4: Simplify right side
    28,709.16x = 664,570,042.06
  5. Step 5: Solve for x
    x = 664,570,042.06/28,709.16
  6. Step 6: Final answer
    x = 23,148.36

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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.