Home / 28,653.15-42,979.52-20,184.80

Finding the Fourth Proportional to 28,653.15, 42,979.52 and 20,184.80

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Solution

The fourth proportional to 28,653.15, 42,979.52 and 20,184.80 is: 30,277.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.15 : 42,979.52 = 20,184.80 : x
  2. Step 2: Convert to fraction form
    28,653.15/42,979.52 = 20,184.80/x
  3. Step 3: Cross multiply
    28,653.15x = 42,979.52 × 20,184.80
  4. Step 4: Simplify right side
    28,653.15x = 867,533,173.21
  5. Step 5: Solve for x
    x = 867,533,173.21/28,653.15
  6. Step 6: Final answer
    x = 30,277.06

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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.