Home / 20,156.81-30,225.60-7,007.45

Finding the Fourth Proportional to 20,156.81, 30,225.60 and 7,007.45

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Solution

The fourth proportional to 20,156.81, 30,225.60 and 7,007.45 is: 10,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.81 : 30,225.60 = 7,007.45 : x
  2. Step 2: Convert to fraction form
    20,156.81/30,225.60 = 7,007.45/x
  3. Step 3: Cross multiply
    20,156.81x = 30,225.60 × 7,007.45
  4. Step 4: Simplify right side
    20,156.81x = 211,804,229.59
  5. Step 5: Solve for x
    x = 211,804,229.59/20,156.81
  6. Step 6: Final answer
    x = 10,507.83

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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.