Home / 19,116.40-28,617.90-14,207.80

Finding the Fourth Proportional to 19,116.40, 28,617.90 and 14,207.80

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Solution

The fourth proportional to 19,116.40, 28,617.90 and 14,207.80 is: 21,269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116.40 : 28,617.90 = 14,207.80 : x
  2. Step 2: Convert to fraction form
    19,116.40/28,617.90 = 14,207.80/x
  3. Step 3: Cross multiply
    19,116.40x = 28,617.90 × 14,207.80
  4. Step 4: Simplify right side
    19,116.40x = 406,597,399.62
  5. Step 5: Solve for x
    x = 406,597,399.62/19,116.40
  6. Step 6: Final answer
    x = 21,269.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.