Home / 20,751.75-31,127.31-9,652.23

Finding the Fourth Proportional to 20,751.75, 31,127.31 and 9,652.23

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Solution

The fourth proportional to 20,751.75, 31,127.31 and 9,652.23 is: 14,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.75 : 31,127.31 = 9,652.23 : x
  2. Step 2: Convert to fraction form
    20,751.75/31,127.31 = 9,652.23/x
  3. Step 3: Cross multiply
    20,751.75x = 31,127.31 × 9,652.23
  4. Step 4: Simplify right side
    20,751.75x = 300,447,955.40
  5. Step 5: Solve for x
    x = 300,447,955.40/20,751.75
  6. Step 6: Final answer
    x = 14,478.20

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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.