Home / 21,266.18-31,857.76-15,633.46

Finding the Fourth Proportional to 21,266.18, 31,857.76 and 15,633.46

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Solution

The fourth proportional to 21,266.18, 31,857.76 and 15,633.46 is: 23,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.18 : 31,857.76 = 15,633.46 : x
  2. Step 2: Convert to fraction form
    21,266.18/31,857.76 = 15,633.46/x
  3. Step 3: Cross multiply
    21,266.18x = 31,857.76 × 15,633.46
  4. Step 4: Simplify right side
    21,266.18x = 498,047,010.48
  5. Step 5: Solve for x
    x = 498,047,010.48/21,266.18
  6. Step 6: Final answer
    x = 23,419.67

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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.