Home / 14,119.12-21,178.76-4,765.72

Finding the Fourth Proportional to 14,119.12, 21,178.76 and 4,765.72

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Solution

The fourth proportional to 14,119.12, 21,178.76 and 4,765.72 is: 7,148.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.12 : 21,178.76 = 4,765.72 : x
  2. Step 2: Convert to fraction form
    14,119.12/21,178.76 = 4,765.72/x
  3. Step 3: Cross multiply
    14,119.12x = 21,178.76 × 4,765.72
  4. Step 4: Simplify right side
    14,119.12x = 100,932,040.11
  5. Step 5: Solve for x
    x = 100,932,040.11/14,119.12
  6. Step 6: Final answer
    x = 7,148.61

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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.