Home / 19,428.85-29,142.59-6,280.88

Finding the Fourth Proportional to 19,428.85, 29,142.59 and 6,280.88

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Solution

The fourth proportional to 19,428.85, 29,142.59 and 6,280.88 is: 9,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.85 : 29,142.59 = 6,280.88 : x
  2. Step 2: Convert to fraction form
    19,428.85/29,142.59 = 6,280.88/x
  3. Step 3: Cross multiply
    19,428.85x = 29,142.59 × 6,280.88
  4. Step 4: Simplify right side
    19,428.85x = 183,040,933.56
  5. Step 5: Solve for x
    x = 183,040,933.56/19,428.85
  6. Step 6: Final answer
    x = 9,421.09

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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.