Home / 19,582.80-29,377.68-6,438.80

Finding the Fourth Proportional to 19,582.80, 29,377.68 and 6,438.80

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Solution

The fourth proportional to 19,582.80, 29,377.68 and 6,438.80 is: 9,659.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,582.80 : 29,377.68 = 6,438.80 : x
  2. Step 2: Convert to fraction form
    19,582.80/29,377.68 = 6,438.80/x
  3. Step 3: Cross multiply
    19,582.80x = 29,377.68 × 6,438.80
  4. Step 4: Simplify right side
    19,582.80x = 189,157,005.98
  5. Step 5: Solve for x
    x = 189,157,005.98/19,582.80
  6. Step 6: Final answer
    x = 9,659.34

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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.