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Finding the Fourth Proportional to 18,683.56, 25,783.40 and 10,300.08

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Solution

The fourth proportional to 18,683.56, 25,783.40 and 10,300.08 is: 14,214.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.56 : 25,783.40 = 10,300.08 : x
  2. Step 2: Convert to fraction form
    18,683.56/25,783.40 = 10,300.08/x
  3. Step 3: Cross multiply
    18,683.56x = 25,783.40 × 10,300.08
  4. Step 4: Simplify right side
    18,683.56x = 265,571,082.67
  5. Step 5: Solve for x
    x = 265,571,082.67/18,683.56
  6. Step 6: Final answer
    x = 14,214.16

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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.