Home / 21,752.28-30,016.44-12,318.48

Finding the Fourth Proportional to 21,752.28, 30,016.44 and 12,318.48

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Solution

The fourth proportional to 21,752.28, 30,016.44 and 12,318.48 is: 16,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.28 : 30,016.44 = 12,318.48 : x
  2. Step 2: Convert to fraction form
    21,752.28/30,016.44 = 12,318.48/x
  3. Step 3: Cross multiply
    21,752.28x = 30,016.44 × 12,318.48
  4. Step 4: Simplify right side
    21,752.28x = 369,756,915.81
  5. Step 5: Solve for x
    x = 369,756,915.81/21,752.28
  6. Step 6: Final answer
    x = 16,998.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.