Home / 21,878.88-30,194.16-16,565.28

Finding the Fourth Proportional to 21,878.88, 30,194.16 and 16,565.28

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Solution

The fourth proportional to 21,878.88, 30,194.16 and 16,565.28 is: 22,861.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.88 : 30,194.16 = 16,565.28 : x
  2. Step 2: Convert to fraction form
    21,878.88/30,194.16 = 16,565.28/x
  3. Step 3: Cross multiply
    21,878.88x = 30,194.16 × 16,565.28
  4. Step 4: Simplify right side
    21,878.88x = 500,174,714.76
  5. Step 5: Solve for x
    x = 500,174,714.76/21,878.88
  6. Step 6: Final answer
    x = 22,861.07

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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.