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Finding the Fourth Proportional to 14,828.16, 20,462.40 and 8,540.40

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Solution

The fourth proportional to 14,828.16, 20,462.40 and 8,540.40 is: 11,785.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,828.16 : 20,462.40 = 8,540.40 : x
  2. Step 2: Convert to fraction form
    14,828.16/20,462.40 = 8,540.40/x
  3. Step 3: Cross multiply
    14,828.16x = 20,462.40 × 8,540.40
  4. Step 4: Simplify right side
    14,828.16x = 174,757,080.96
  5. Step 5: Solve for x
    x = 174,757,080.96/14,828.16
  6. Step 6: Final answer
    x = 11,785.49

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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.