Home / 28,476.26-42,690.08-20,130.02

Finding the Fourth Proportional to 28,476.26, 42,690.08 and 20,130.02

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Solution

The fourth proportional to 28,476.26, 42,690.08 and 20,130.02 is: 30,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.26 : 42,690.08 = 20,130.02 : x
  2. Step 2: Convert to fraction form
    28,476.26/42,690.08 = 20,130.02/x
  3. Step 3: Cross multiply
    28,476.26x = 42,690.08 × 20,130.02
  4. Step 4: Simplify right side
    28,476.26x = 859,352,164.20
  5. Step 5: Solve for x
    x = 859,352,164.20/28,476.26
  6. Step 6: Final answer
    x = 30,177.85

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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.