Home / 28,272.20-42,369.06-12,453.51

Finding the Fourth Proportional to 28,272.20, 42,369.06 and 12,453.51

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Solution

The fourth proportional to 28,272.20, 42,369.06 and 12,453.51 is: 18,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.20 : 42,369.06 = 12,453.51 : x
  2. Step 2: Convert to fraction form
    28,272.20/42,369.06 = 12,453.51/x
  3. Step 3: Cross multiply
    28,272.20x = 42,369.06 × 12,453.51
  4. Step 4: Simplify right side
    28,272.20x = 527,643,512.40
  5. Step 5: Solve for x
    x = 527,643,512.40/28,272.20
  6. Step 6: Final answer
    x = 18,662.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.