Home / 14,102.40-21,131.35-5,205.49

Finding the Fourth Proportional to 14,102.40, 21,131.35 and 5,205.49

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Solution

The fourth proportional to 14,102.40, 21,131.35 and 5,205.49 is: 7,800.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,102.40 : 21,131.35 = 5,205.49 : x
  2. Step 2: Convert to fraction form
    14,102.40/21,131.35 = 5,205.49/x
  3. Step 3: Cross multiply
    14,102.40x = 21,131.35 × 5,205.49
  4. Step 4: Simplify right side
    14,102.40x = 109,998,899.43
  5. Step 5: Solve for x
    x = 109,998,899.43/14,102.40
  6. Step 6: Final answer
    x = 7,800.01

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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.