Home / 15,840.56-21,861.60-9,126.44

Finding the Fourth Proportional to 15,840.56, 21,861.60 and 9,126.44

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Solution

The fourth proportional to 15,840.56, 21,861.60 and 9,126.44 is: 12,595.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.56 : 21,861.60 = 9,126.44 : x
  2. Step 2: Convert to fraction form
    15,840.56/21,861.60 = 9,126.44/x
  3. Step 3: Cross multiply
    15,840.56x = 21,861.60 × 9,126.44
  4. Step 4: Simplify right side
    15,840.56x = 199,518,580.70
  5. Step 5: Solve for x
    x = 199,518,580.70/15,840.56
  6. Step 6: Final answer
    x = 12,595.42

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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.