Home / 28,367.31-42,557.28-8,647.40

Finding the Fourth Proportional to 28,367.31, 42,557.28 and 8,647.40

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Solution

The fourth proportional to 28,367.31, 42,557.28 and 8,647.40 is: 12,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.31 : 42,557.28 = 8,647.40 : x
  2. Step 2: Convert to fraction form
    28,367.31/42,557.28 = 8,647.40/x
  3. Step 3: Cross multiply
    28,367.31x = 42,557.28 × 8,647.40
  4. Step 4: Simplify right side
    28,367.31x = 368,009,961.89
  5. Step 5: Solve for x
    x = 368,009,961.89/28,367.31
  6. Step 6: Final answer
    x = 12,973.03

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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.