Home / 19,681.28-29,528.30-11,782.56

Finding the Fourth Proportional to 19,681.28, 29,528.30 and 11,782.56

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Solution

The fourth proportional to 19,681.28, 29,528.30 and 11,782.56 is: 17,677.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.28 : 29,528.30 = 11,782.56 : x
  2. Step 2: Convert to fraction form
    19,681.28/29,528.30 = 11,782.56/x
  3. Step 3: Cross multiply
    19,681.28x = 29,528.30 × 11,782.56
  4. Step 4: Simplify right side
    19,681.28x = 347,918,907.54
  5. Step 5: Solve for x
    x = 347,918,907.54/19,681.28
  6. Step 6: Final answer
    x = 17,677.66

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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.