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Finding the Fourth Proportional to 18,683.64, 25,783.11 and 10,727.10

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Solution

The fourth proportional to 18,683.64, 25,783.11 and 10,727.10 is: 14,803.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.64 : 25,783.11 = 10,727.10 : x
  2. Step 2: Convert to fraction form
    18,683.64/25,783.11 = 10,727.10/x
  3. Step 3: Cross multiply
    18,683.64x = 25,783.11 × 10,727.10
  4. Step 4: Simplify right side
    18,683.64x = 276,577,999.28
  5. Step 5: Solve for x
    x = 276,577,999.28/18,683.64
  6. Step 6: Final answer
    x = 14,803.22

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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.