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Finding the Fourth Proportional to 18,608.64, 25,681.68 and 10,226.40

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Solution

The fourth proportional to 18,608.64, 25,681.68 and 10,226.40 is: 14,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.64 : 25,681.68 = 10,226.40 : x
  2. Step 2: Convert to fraction form
    18,608.64/25,681.68 = 10,226.40/x
  3. Step 3: Cross multiply
    18,608.64x = 25,681.68 × 10,226.40
  4. Step 4: Simplify right side
    18,608.64x = 262,631,132.35
  5. Step 5: Solve for x
    x = 262,631,132.35/18,608.64
  6. Step 6: Final answer
    x = 14,113.40

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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.