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Finding the Fourth Proportional to 18,683.68, 25,783.78 and 10,300.18

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Solution

The fourth proportional to 18,683.68, 25,783.78 and 10,300.18 is: 14,214.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.68 : 25,783.78 = 10,300.18 : x
  2. Step 2: Convert to fraction form
    18,683.68/25,783.78 = 10,300.18/x
  3. Step 3: Cross multiply
    18,683.68x = 25,783.78 × 10,300.18
  4. Step 4: Simplify right side
    18,683.68x = 265,577,575.08
  5. Step 5: Solve for x
    x = 265,577,575.08/18,683.68
  6. Step 6: Final answer
    x = 14,214.41

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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.