Home / 21,281.40-29,367.72-11,849.76

Finding the Fourth Proportional to 21,281.40, 29,367.72 and 11,849.76

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Solution

The fourth proportional to 21,281.40, 29,367.72 and 11,849.76 is: 16,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.40 : 29,367.72 = 11,849.76 : x
  2. Step 2: Convert to fraction form
    21,281.40/29,367.72 = 11,849.76/x
  3. Step 3: Cross multiply
    21,281.40x = 29,367.72 × 11,849.76
  4. Step 4: Simplify right side
    21,281.40x = 348,000,433.75
  5. Step 5: Solve for x
    x = 348,000,433.75/21,281.40
  6. Step 6: Final answer
    x = 16,352.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.