Home / 28,664.55-39,565.44-19,118.30

Finding the Fourth Proportional to 28,664.55, 39,565.44 and 19,118.30

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Solution

The fourth proportional to 28,664.55, 39,565.44 and 19,118.30 is: 26,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.55 : 39,565.44 = 19,118.30 : x
  2. Step 2: Convert to fraction form
    28,664.55/39,565.44 = 19,118.30/x
  3. Step 3: Cross multiply
    28,664.55x = 39,565.44 × 19,118.30
  4. Step 4: Simplify right side
    28,664.55x = 756,423,753.72
  5. Step 5: Solve for x
    x = 756,423,753.72/28,664.55
  6. Step 6: Final answer
    x = 26,388.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.