Home / 14,639.16-20,204.46-9,920.28

Finding the Fourth Proportional to 14,639.16, 20,204.46 and 9,920.28

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Solution

The fourth proportional to 14,639.16, 20,204.46 and 9,920.28 is: 13,691.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.16 : 20,204.46 = 9,920.28 : x
  2. Step 2: Convert to fraction form
    14,639.16/20,204.46 = 9,920.28/x
  3. Step 3: Cross multiply
    14,639.16x = 20,204.46 × 9,920.28
  4. Step 4: Simplify right side
    14,639.16x = 200,433,900.45
  5. Step 5: Solve for x
    x = 200,433,900.45/14,639.16
  6. Step 6: Final answer
    x = 13,691.63

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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.