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Finding the Fourth Proportional to 12,425.39, 18,615.93 and 10,653

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Solution

The fourth proportional to 12,425.39, 18,615.93 and 10,653 is: 15,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.39 : 18,615.93 = 10,653 : x
  2. Step 2: Convert to fraction form
    12,425.39/18,615.93 = 10,653/x
  3. Step 3: Cross multiply
    12,425.39x = 18,615.93 × 10,653
  4. Step 4: Simplify right side
    12,425.39x = 198,315,502.29
  5. Step 5: Solve for x
    x = 198,315,502.29/12,425.39
  6. Step 6: Final answer
    x = 15,960.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.