Home / 28,431.31-42,656.40-8,710.06

Finding the Fourth Proportional to 28,431.31, 42,656.40 and 8,710.06

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Solution

The fourth proportional to 28,431.31, 42,656.40 and 8,710.06 is: 13,067.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.31 : 42,656.40 = 8,710.06 : x
  2. Step 2: Convert to fraction form
    28,431.31/42,656.40 = 8,710.06/x
  3. Step 3: Cross multiply
    28,431.31x = 42,656.40 × 8,710.06
  4. Step 4: Simplify right side
    28,431.31x = 371,539,546.55
  5. Step 5: Solve for x
    x = 371,539,546.55/28,431.31
  6. Step 6: Final answer
    x = 13,067.97

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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.