Home / 20,343.81-30,515.72-5,552.40

Finding the Fourth Proportional to 20,343.81, 30,515.72 and 5,552.40

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Solution

The fourth proportional to 20,343.81, 30,515.72 and 5,552.40 is: 8,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.81 : 30,515.72 = 5,552.40 : x
  2. Step 2: Convert to fraction form
    20,343.81/30,515.72 = 5,552.40/x
  3. Step 3: Cross multiply
    20,343.81x = 30,515.72 × 5,552.40
  4. Step 4: Simplify right side
    20,343.81x = 169,435,455.97
  5. Step 5: Solve for x
    x = 169,435,455.97/20,343.81
  6. Step 6: Final answer
    x = 8,328.60

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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.