Home / 28,518.49-39,353.91-15,770.92

Finding the Fourth Proportional to 28,518.49, 39,353.91 and 15,770.92

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Solution

The fourth proportional to 28,518.49, 39,353.91 and 15,770.92 is: 21,762.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.49 : 39,353.91 = 15,770.92 : x
  2. Step 2: Convert to fraction form
    28,518.49/39,353.91 = 15,770.92/x
  3. Step 3: Cross multiply
    28,518.49x = 39,353.91 × 15,770.92
  4. Step 4: Simplify right side
    28,518.49x = 620,647,366.30
  5. Step 5: Solve for x
    x = 620,647,366.30/28,518.49
  6. Step 6: Final answer
    x = 21,762.98

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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.