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Finding the Fourth Proportional to 14,245.76, 21,360.38 and 6,840.11

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Solution

The fourth proportional to 14,245.76, 21,360.38 and 6,840.11 is: 10,256.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.76 : 21,360.38 = 6,840.11 : x
  2. Step 2: Convert to fraction form
    14,245.76/21,360.38 = 6,840.11/x
  3. Step 3: Cross multiply
    14,245.76x = 21,360.38 × 6,840.11
  4. Step 4: Simplify right side
    14,245.76x = 146,107,207.84
  5. Step 5: Solve for x
    x = 146,107,207.84/14,245.76
  6. Step 6: Final answer
    x = 10,256.19

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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.