Home / 21,281.99-29,370.05-11,850.55

Finding the Fourth Proportional to 21,281.99, 29,370.05 and 11,850.55

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Solution

The fourth proportional to 21,281.99, 29,370.05 and 11,850.55 is: 16,354.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.99 : 29,370.05 = 11,850.55 : x
  2. Step 2: Convert to fraction form
    21,281.99/29,370.05 = 11,850.55/x
  3. Step 3: Cross multiply
    21,281.99x = 29,370.05 × 11,850.55
  4. Step 4: Simplify right side
    21,281.99x = 348,051,099.18
  5. Step 5: Solve for x
    x = 348,051,099.18/21,281.99
  6. Step 6: Final answer
    x = 16,354.26

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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.