Home / 28,774.32-39,688.10-19,209.38

Finding the Fourth Proportional to 28,774.32, 39,688.10 and 19,209.38

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Solution

The fourth proportional to 28,774.32, 39,688.10 and 19,209.38 is: 26,495.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,774.32 : 39,688.10 = 19,209.38 : x
  2. Step 2: Convert to fraction form
    28,774.32/39,688.10 = 19,209.38/x
  3. Step 3: Cross multiply
    28,774.32x = 39,688.10 × 19,209.38
  4. Step 4: Simplify right side
    28,774.32x = 762,383,794.38
  5. Step 5: Solve for x
    x = 762,383,794.38/28,774.32
  6. Step 6: Final answer
    x = 26,495.28

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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.