Home / 21,282.57-29,370.86-11,851.13

Finding the Fourth Proportional to 21,282.57, 29,370.86 and 11,851.13

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Solution

The fourth proportional to 21,282.57, 29,370.86 and 11,851.13 is: 16,355.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.57 : 29,370.86 = 11,851.13 : x
  2. Step 2: Convert to fraction form
    21,282.57/29,370.86 = 11,851.13/x
  3. Step 3: Cross multiply
    21,282.57x = 29,370.86 × 11,851.13
  4. Step 4: Simplify right side
    21,282.57x = 348,077,673.96
  5. Step 5: Solve for x
    x = 348,077,673.96/21,282.57
  6. Step 6: Final answer
    x = 16,355.06

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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.