Home / 20,952.75-31,431.02-5,370.51

Finding the Fourth Proportional to 20,952.75, 31,431.02 and 5,370.51

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Solution

The fourth proportional to 20,952.75, 31,431.02 and 5,370.51 is: 8,056.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.75 : 31,431.02 = 5,370.51 : x
  2. Step 2: Convert to fraction form
    20,952.75/31,431.02 = 5,370.51/x
  3. Step 3: Cross multiply
    20,952.75x = 31,431.02 × 5,370.51
  4. Step 4: Simplify right side
    20,952.75x = 168,800,580.37
  5. Step 5: Solve for x
    x = 168,800,580.37/20,952.75
  6. Step 6: Final answer
    x = 8,056.25

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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.