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Finding the Fourth Proportional to 12,658.76, 17,477.30 and 11,330.16

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Solution

The fourth proportional to 12,658.76, 17,477.30 and 11,330.16 is: 15,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.76 : 17,477.30 = 11,330.16 : x
  2. Step 2: Convert to fraction form
    12,658.76/17,477.30 = 11,330.16/x
  3. Step 3: Cross multiply
    12,658.76x = 17,477.30 × 11,330.16
  4. Step 4: Simplify right side
    12,658.76x = 198,020,605.37
  5. Step 5: Solve for x
    x = 198,020,605.37/12,658.76
  6. Step 6: Final answer
    x = 15,642.97

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Half scale
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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.