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Finding the Fourth Proportional to 18,570.78, 25,626.78 and 10,613.88

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Solution

The fourth proportional to 18,570.78, 25,626.78 and 10,613.88 is: 14,646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.78 : 25,626.78 = 10,613.88 : x
  2. Step 2: Convert to fraction form
    18,570.78/25,626.78 = 10,613.88/x
  3. Step 3: Cross multiply
    18,570.78x = 25,626.78 × 10,613.88
  4. Step 4: Simplify right side
    18,570.78x = 271,999,567.71
  5. Step 5: Solve for x
    x = 271,999,567.71/18,570.78
  6. Step 6: Final answer
    x = 14,646.64

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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.