Home / 21,809.40-32,753.70-19,087.80

Finding the Fourth Proportional to 21,809.40, 32,753.70 and 19,087.80

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Solution

The fourth proportional to 21,809.40, 32,753.70 and 19,087.80 is: 28,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.40 : 32,753.70 = 19,087.80 : x
  2. Step 2: Convert to fraction form
    21,809.40/32,753.70 = 19,087.80/x
  3. Step 3: Cross multiply
    21,809.40x = 32,753.70 × 19,087.80
  4. Step 4: Simplify right side
    21,809.40x = 625,196,074.86
  5. Step 5: Solve for x
    x = 625,196,074.86/21,809.40
  6. Step 6: Final answer
    x = 28,666.36

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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.