Home / 28,427.78-39,230.60-16,491.33

Finding the Fourth Proportional to 28,427.78, 39,230.60 and 16,491.33

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Solution

The fourth proportional to 28,427.78, 39,230.60 and 16,491.33 is: 22,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.78 : 39,230.60 = 16,491.33 : x
  2. Step 2: Convert to fraction form
    28,427.78/39,230.60 = 16,491.33/x
  3. Step 3: Cross multiply
    28,427.78x = 39,230.60 × 16,491.33
  4. Step 4: Simplify right side
    28,427.78x = 646,964,688.24
  5. Step 5: Solve for x
    x = 646,964,688.24/28,427.78
  6. Step 6: Final answer
    x = 22,758.18

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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.