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Finding the Fourth Proportional to 14,158.56, 21,238.56 and 5,391.84

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Solution

The fourth proportional to 14,158.56, 21,238.56 and 5,391.84 is: 8,088.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,158.56 : 21,238.56 = 5,391.84 : x
  2. Step 2: Convert to fraction form
    14,158.56/21,238.56 = 5,391.84/x
  3. Step 3: Cross multiply
    14,158.56x = 21,238.56 × 5,391.84
  4. Step 4: Simplify right side
    14,158.56x = 114,514,917.35
  5. Step 5: Solve for x
    x = 114,514,917.35/14,158.56
  6. Step 6: Final answer
    x = 8,088.03

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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.