Home / 19,857.84-29,775.36-15,353.28

Finding the Fourth Proportional to 19,857.84, 29,775.36 and 15,353.28

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Solution

The fourth proportional to 19,857.84, 29,775.36 and 15,353.28 is: 23,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.84 : 29,775.36 = 15,353.28 : x
  2. Step 2: Convert to fraction form
    19,857.84/29,775.36 = 15,353.28/x
  3. Step 3: Cross multiply
    19,857.84x = 29,775.36 × 15,353.28
  4. Step 4: Simplify right side
    19,857.84x = 457,149,439.18
  5. Step 5: Solve for x
    x = 457,149,439.18/19,857.84
  6. Step 6: Final answer
    x = 23,021.11

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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.