Home / 21,077.41-31,615.36-5,282.57

Finding the Fourth Proportional to 21,077.41, 31,615.36 and 5,282.57

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Solution

The fourth proportional to 21,077.41, 31,615.36 and 5,282.57 is: 7,923.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.41 : 31,615.36 = 5,282.57 : x
  2. Step 2: Convert to fraction form
    21,077.41/31,615.36 = 5,282.57/x
  3. Step 3: Cross multiply
    21,077.41x = 31,615.36 × 5,282.57
  4. Step 4: Simplify right side
    21,077.41x = 167,010,352.28
  5. Step 5: Solve for x
    x = 167,010,352.28/21,077.41
  6. Step 6: Final answer
    x = 7,923.67

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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.