Home / 28,231.35-42,347.10-7,171.35

Finding the Fourth Proportional to 28,231.35, 42,347.10 and 7,171.35

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Solution

The fourth proportional to 28,231.35, 42,347.10 and 7,171.35 is: 10,757.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.35 : 42,347.10 = 7,171.35 : x
  2. Step 2: Convert to fraction form
    28,231.35/42,347.10 = 7,171.35/x
  3. Step 3: Cross multiply
    28,231.35x = 42,347.10 × 7,171.35
  4. Step 4: Simplify right side
    28,231.35x = 303,685,875.59
  5. Step 5: Solve for x
    x = 303,685,875.59/28,231.35
  6. Step 6: Final answer
    x = 10,757.04

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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.