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Finding the Fourth Proportional to 14,779.74, 20,398.35 and 14,293.74

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Solution

The fourth proportional to 14,779.74, 20,398.35 and 14,293.74 is: 19,727.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.74 : 20,398.35 = 14,293.74 : x
  2. Step 2: Convert to fraction form
    14,779.74/20,398.35 = 14,293.74/x
  3. Step 3: Cross multiply
    14,779.74x = 20,398.35 × 14,293.74
  4. Step 4: Simplify right side
    14,779.74x = 291,568,711.33
  5. Step 5: Solve for x
    x = 291,568,711.33/14,779.74
  6. Step 6: Final answer
    x = 19,727.59

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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.