Home / 14,178.07-21,270.75-5,408.20

Finding the Fourth Proportional to 14,178.07, 21,270.75 and 5,408.20

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Solution

The fourth proportional to 14,178.07, 21,270.75 and 5,408.20 is: 8,113.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.07 : 21,270.75 = 5,408.20 : x
  2. Step 2: Convert to fraction form
    14,178.07/21,270.75 = 5,408.20/x
  3. Step 3: Cross multiply
    14,178.07x = 21,270.75 × 5,408.20
  4. Step 4: Simplify right side
    14,178.07x = 115,036,506.88
  5. Step 5: Solve for x
    x = 115,036,506.88/14,178.07
  6. Step 6: Final answer
    x = 8,113.69

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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.