Home / 21,281.68-29,370.76-11,850.24

Finding the Fourth Proportional to 21,281.68, 29,370.76 and 11,850.24

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Solution

The fourth proportional to 21,281.68, 29,370.76 and 11,850.24 is: 16,354.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.68 : 29,370.76 = 11,850.24 : x
  2. Step 2: Convert to fraction form
    21,281.68/29,370.76 = 11,850.24/x
  3. Step 3: Cross multiply
    21,281.68x = 29,370.76 × 11,850.24
  4. Step 4: Simplify right side
    21,281.68x = 348,050,554.98
  5. Step 5: Solve for x
    x = 348,050,554.98/21,281.68
  6. Step 6: Final answer
    x = 16,354.47

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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.