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Finding the Fourth Proportional to 19,378.80, 26,747.04 and 12,303.88

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Solution

The fourth proportional to 19,378.80, 26,747.04 and 12,303.88 is: 16,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.80 : 26,747.04 = 12,303.88 : x
  2. Step 2: Convert to fraction form
    19,378.80/26,747.04 = 12,303.88/x
  3. Step 3: Cross multiply
    19,378.80x = 26,747.04 × 12,303.88
  4. Step 4: Simplify right side
    19,378.80x = 329,092,370.52
  5. Step 5: Solve for x
    x = 329,092,370.52/19,378.80
  6. Step 6: Final answer
    x = 16,982.08

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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.