Home / 21,953.60-30,374.72-19,167.20

Finding the Fourth Proportional to 21,953.60, 30,374.72 and 19,167.20

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Solution

The fourth proportional to 21,953.60, 30,374.72 and 19,167.20 is: 26,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.60 : 30,374.72 = 19,167.20 : x
  2. Step 2: Convert to fraction form
    21,953.60/30,374.72 = 19,167.20/x
  3. Step 3: Cross multiply
    21,953.60x = 30,374.72 × 19,167.20
  4. Step 4: Simplify right side
    21,953.60x = 582,198,333.18
  5. Step 5: Solve for x
    x = 582,198,333.18/21,953.60
  6. Step 6: Final answer
    x = 26,519.49

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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.