Home / 15,718.37-21,692.43-8,644.79

Finding the Fourth Proportional to 15,718.37, 21,692.43 and 8,644.79

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Solution

The fourth proportional to 15,718.37, 21,692.43 and 8,644.79 is: 11,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718.37 : 21,692.43 = 8,644.79 : x
  2. Step 2: Convert to fraction form
    15,718.37/21,692.43 = 8,644.79/x
  3. Step 3: Cross multiply
    15,718.37x = 21,692.43 × 8,644.79
  4. Step 4: Simplify right side
    15,718.37x = 187,526,501.94
  5. Step 5: Solve for x
    x = 187,526,501.94/15,718.37
  6. Step 6: Final answer
    x = 11,930.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.