Home / 19,915.91-29,693.29-19,396.50

Finding the Fourth Proportional to 19,915.91, 29,693.29 and 19,396.50

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Solution

The fourth proportional to 19,915.91, 29,693.29 and 19,396.50 is: 28,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.91 : 29,693.29 = 19,396.50 : x
  2. Step 2: Convert to fraction form
    19,915.91/29,693.29 = 19,396.50/x
  3. Step 3: Cross multiply
    19,915.91x = 29,693.29 × 19,396.50
  4. Step 4: Simplify right side
    19,915.91x = 575,945,776.01
  5. Step 5: Solve for x
    x = 575,945,776.01/19,915.91
  6. Step 6: Final answer
    x = 28,918.88

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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.