Home / 13,642.40-20,463.72-4,871.18

Finding the Fourth Proportional to 13,642.40, 20,463.72 and 4,871.18

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Solution

The fourth proportional to 13,642.40, 20,463.72 and 4,871.18 is: 7,306.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.40 : 20,463.72 = 4,871.18 : x
  2. Step 2: Convert to fraction form
    13,642.40/20,463.72 = 4,871.18/x
  3. Step 3: Cross multiply
    13,642.40x = 20,463.72 × 4,871.18
  4. Step 4: Simplify right side
    13,642.40x = 99,682,463.59
  5. Step 5: Solve for x
    x = 99,682,463.59/13,642.40
  6. Step 6: Final answer
    x = 7,306.81

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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.