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Finding the Fourth Proportional to 19,476.86, 26,880.08 and 11,928.20

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Solution

The fourth proportional to 19,476.86, 26,880.08 and 11,928.20 is: 16,462.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,476.86 : 26,880.08 = 11,928.20 : x
  2. Step 2: Convert to fraction form
    19,476.86/26,880.08 = 11,928.20/x
  3. Step 3: Cross multiply
    19,476.86x = 26,880.08 × 11,928.20
  4. Step 4: Simplify right side
    19,476.86x = 320,630,776.21
  5. Step 5: Solve for x
    x = 320,630,776.21/19,476.86
  6. Step 6: Final answer
    x = 16,462.14

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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.