Home / 21,986.50-30,341.48-11,914.94

Finding the Fourth Proportional to 21,986.50, 30,341.48 and 11,914.94

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Solution

The fourth proportional to 21,986.50, 30,341.48 and 11,914.94 is: 16,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.50 : 30,341.48 = 11,914.94 : x
  2. Step 2: Convert to fraction form
    21,986.50/30,341.48 = 11,914.94/x
  3. Step 3: Cross multiply
    21,986.50x = 30,341.48 × 11,914.94
  4. Step 4: Simplify right side
    21,986.50x = 361,516,913.71
  5. Step 5: Solve for x
    x = 361,516,913.71/21,986.50
  6. Step 6: Final answer
    x = 16,442.68

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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.