Home / 14,178.81-21,270.53-4,315.78

Finding the Fourth Proportional to 14,178.81, 21,270.53 and 4,315.78

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Solution

The fourth proportional to 14,178.81, 21,270.53 and 4,315.78 is: 6,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.81 : 21,270.53 = 4,315.78 : x
  2. Step 2: Convert to fraction form
    14,178.81/21,270.53 = 4,315.78/x
  3. Step 3: Cross multiply
    14,178.81x = 21,270.53 × 4,315.78
  4. Step 4: Simplify right side
    14,178.81x = 91,798,965.34
  5. Step 5: Solve for x
    x = 91,798,965.34/14,178.81
  6. Step 6: Final answer
    x = 6,474.38

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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.