Home / 28,438.11-42,652.31-7,656.75

Finding the Fourth Proportional to 28,438.11, 42,652.31 and 7,656.75

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Solution

The fourth proportional to 28,438.11, 42,652.31 and 7,656.75 is: 11,483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.11 : 42,652.31 = 7,656.75 : x
  2. Step 2: Convert to fraction form
    28,438.11/42,652.31 = 7,656.75/x
  3. Step 3: Cross multiply
    28,438.11x = 42,652.31 × 7,656.75
  4. Step 4: Simplify right side
    28,438.11x = 326,578,036.31
  5. Step 5: Solve for x
    x = 326,578,036.31/28,438.11
  6. Step 6: Final answer
    x = 11,483.82

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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.