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Finding the Fourth Proportional to 12,658.51, 17,461.74 and 8,880.13

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Solution

The fourth proportional to 12,658.51, 17,461.74 and 8,880.13 is: 12,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.51 : 17,461.74 = 8,880.13 : x
  2. Step 2: Convert to fraction form
    12,658.51/17,461.74 = 8,880.13/x
  3. Step 3: Cross multiply
    12,658.51x = 17,461.74 × 8,880.13
  4. Step 4: Simplify right side
    12,658.51x = 155,062,521.23
  5. Step 5: Solve for x
    x = 155,062,521.23/12,658.51
  6. Step 6: Final answer
    x = 12,249.67

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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.