Home / 19,428.31-29,114.88-8,872.39

Finding the Fourth Proportional to 19,428.31, 29,114.88 and 8,872.39

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Solution

The fourth proportional to 19,428.31, 29,114.88 and 8,872.39 is: 13,295.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.31 : 29,114.88 = 8,872.39 : x
  2. Step 2: Convert to fraction form
    19,428.31/29,114.88 = 8,872.39/x
  3. Step 3: Cross multiply
    19,428.31x = 29,114.88 × 8,872.39
  4. Step 4: Simplify right side
    19,428.31x = 258,318,570.16
  5. Step 5: Solve for x
    x = 258,318,570.16/19,428.31
  6. Step 6: Final answer
    x = 13,295.99

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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.