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Finding the Fourth Proportional to 19,670.76, 27,149.16 and 11,603.92

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Solution

The fourth proportional to 19,670.76, 27,149.16 and 11,603.92 is: 16,015.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.76 : 27,149.16 = 11,603.92 : x
  2. Step 2: Convert to fraction form
    19,670.76/27,149.16 = 11,603.92/x
  3. Step 3: Cross multiply
    19,670.76x = 27,149.16 × 11,603.92
  4. Step 4: Simplify right side
    19,670.76x = 315,036,680.71
  5. Step 5: Solve for x
    x = 315,036,680.71/19,670.76
  6. Step 6: Final answer
    x = 16,015.48

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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.