Home / 14,120.40-21,178.16-5,353.20

Finding the Fourth Proportional to 14,120.40, 21,178.16 and 5,353.20

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Solution

The fourth proportional to 14,120.40, 21,178.16 and 5,353.20 is: 8,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.40 : 21,178.16 = 5,353.20 : x
  2. Step 2: Convert to fraction form
    14,120.40/21,178.16 = 5,353.20/x
  3. Step 3: Cross multiply
    14,120.40x = 21,178.16 × 5,353.20
  4. Step 4: Simplify right side
    14,120.40x = 113,370,926.11
  5. Step 5: Solve for x
    x = 113,370,926.11/14,120.40
  6. Step 6: Final answer
    x = 8,028.87

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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.