Home / 28,316.40-39,078.82-16,986.34

Finding the Fourth Proportional to 28,316.40, 39,078.82 and 16,986.34

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Solution

The fourth proportional to 28,316.40, 39,078.82 and 16,986.34 is: 23,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.40 : 39,078.82 = 16,986.34 : x
  2. Step 2: Convert to fraction form
    28,316.40/39,078.82 = 16,986.34/x
  3. Step 3: Cross multiply
    28,316.40x = 39,078.82 × 16,986.34
  4. Step 4: Simplify right side
    28,316.40x = 663,806,123.32
  5. Step 5: Solve for x
    x = 663,806,123.32/28,316.40
  6. Step 6: Final answer
    x = 23,442.46

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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.