Home / 13,731.64-18,946.46-8,066.08

Finding the Fourth Proportional to 13,731.64, 18,946.46 and 8,066.08

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Solution

The fourth proportional to 13,731.64, 18,946.46 and 8,066.08 is: 11,129.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.64 : 18,946.46 = 8,066.08 : x
  2. Step 2: Convert to fraction form
    13,731.64/18,946.46 = 8,066.08/x
  3. Step 3: Cross multiply
    13,731.64x = 18,946.46 × 8,066.08
  4. Step 4: Simplify right side
    13,731.64x = 152,823,662.08
  5. Step 5: Solve for x
    x = 152,823,662.08/13,731.64
  6. Step 6: Final answer
    x = 11,129.31

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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.