Home / 19,918.26-29,689.92-19,281.60

Finding the Fourth Proportional to 19,918.26, 29,689.92 and 19,281.60

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Solution

The fourth proportional to 19,918.26, 29,689.92 and 19,281.60 is: 28,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.26 : 29,689.92 = 19,281.60 : x
  2. Step 2: Convert to fraction form
    19,918.26/29,689.92 = 19,281.60/x
  3. Step 3: Cross multiply
    19,918.26x = 29,689.92 × 19,281.60
  4. Step 4: Simplify right side
    19,918.26x = 572,469,161.47
  5. Step 5: Solve for x
    x = 572,469,161.47/19,918.26
  6. Step 6: Final answer
    x = 28,740.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.