Home / 21,308.56-31,986.21-8,837.32

Finding the Fourth Proportional to 21,308.56, 31,986.21 and 8,837.32

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Solution

The fourth proportional to 21,308.56, 31,986.21 and 8,837.32 is: 13,265.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.56 : 31,986.21 = 8,837.32 : x
  2. Step 2: Convert to fraction form
    21,308.56/31,986.21 = 8,837.32/x
  3. Step 3: Cross multiply
    21,308.56x = 31,986.21 × 8,837.32
  4. Step 4: Simplify right side
    21,308.56x = 282,672,373.36
  5. Step 5: Solve for x
    x = 282,672,373.36/21,308.56
  6. Step 6: Final answer
    x = 13,265.67

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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.