Home / 19,644.90-29,474.91-9,120.30

Finding the Fourth Proportional to 19,644.90, 29,474.91 and 9,120.30

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Solution

The fourth proportional to 19,644.90, 29,474.91 and 9,120.30 is: 13,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644.90 : 29,474.91 = 9,120.30 : x
  2. Step 2: Convert to fraction form
    19,644.90/29,474.91 = 9,120.30/x
  3. Step 3: Cross multiply
    19,644.90x = 29,474.91 × 9,120.30
  4. Step 4: Simplify right side
    19,644.90x = 268,820,021.67
  5. Step 5: Solve for x
    x = 268,820,021.67/19,644.90
  6. Step 6: Final answer
    x = 13,683.96

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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.