Home / 28,155.52-42,255.06-14,129.56

Finding the Fourth Proportional to 28,155.52, 42,255.06 and 14,129.56

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Solution

The fourth proportional to 28,155.52, 42,255.06 and 14,129.56 is: 21,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.52 : 42,255.06 = 14,129.56 : x
  2. Step 2: Convert to fraction form
    28,155.52/42,255.06 = 14,129.56/x
  3. Step 3: Cross multiply
    28,155.52x = 42,255.06 × 14,129.56
  4. Step 4: Simplify right side
    28,155.52x = 597,045,405.57
  5. Step 5: Solve for x
    x = 597,045,405.57/28,155.52
  6. Step 6: Final answer
    x = 21,205.27

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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.