Home / 28,278.85-42,418.88-8,557.37

Finding the Fourth Proportional to 28,278.85, 42,418.88 and 8,557.37

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Solution

The fourth proportional to 28,278.85, 42,418.88 and 8,557.37 is: 12,836.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.85 : 42,418.88 = 8,557.37 : x
  2. Step 2: Convert to fraction form
    28,278.85/42,418.88 = 8,557.37/x
  3. Step 3: Cross multiply
    28,278.85x = 42,418.88 × 8,557.37
  4. Step 4: Simplify right side
    28,278.85x = 362,994,008.36
  5. Step 5: Solve for x
    x = 362,994,008.36/28,278.85
  6. Step 6: Final answer
    x = 12,836.24

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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.