Home / 10,520.98-15,787.50-4,279.84

Finding the Fourth Proportional to 10,520.98, 15,787.50 and 4,279.84

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Solution

The fourth proportional to 10,520.98, 15,787.50 and 4,279.84 is: 6,422.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.98 : 15,787.50 = 4,279.84 : x
  2. Step 2: Convert to fraction form
    10,520.98/15,787.50 = 4,279.84/x
  3. Step 3: Cross multiply
    10,520.98x = 15,787.50 × 4,279.84
  4. Step 4: Simplify right side
    10,520.98x = 67,567,974
  5. Step 5: Solve for x
    x = 67,567,974/10,520.98
  6. Step 6: Final answer
    x = 6,422.21

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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.