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Finding the Fourth Proportional to 19,909.64, 27,416.05 and 19,467.65

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Solution

The fourth proportional to 19,909.64, 27,416.05 and 19,467.65 is: 26,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.64 : 27,416.05 = 19,467.65 : x
  2. Step 2: Convert to fraction form
    19,909.64/27,416.05 = 19,467.65/x
  3. Step 3: Cross multiply
    19,909.64x = 27,416.05 × 19,467.65
  4. Step 4: Simplify right side
    19,909.64x = 533,726,065.78
  5. Step 5: Solve for x
    x = 533,726,065.78/19,909.64
  6. Step 6: Final answer
    x = 26,807.42

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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.