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Finding the Fourth Proportional to 19,576.20, 29,385.90 and 10,828.20

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Solution

The fourth proportional to 19,576.20, 29,385.90 and 10,828.20 is: 16,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,576.20 : 29,385.90 = 10,828.20 : x
  2. Step 2: Convert to fraction form
    19,576.20/29,385.90 = 10,828.20/x
  3. Step 3: Cross multiply
    19,576.20x = 29,385.90 × 10,828.20
  4. Step 4: Simplify right side
    19,576.20x = 318,196,402.38
  5. Step 5: Solve for x
    x = 318,196,402.38/19,576.20
  6. Step 6: Final answer
    x = 16,254.25

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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.