Home / 21,147.68-29,180.76-12,073.16

Finding the Fourth Proportional to 21,147.68, 29,180.76 and 12,073.16

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Solution

The fourth proportional to 21,147.68, 29,180.76 and 12,073.16 is: 16,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.68 : 29,180.76 = 12,073.16 : x
  2. Step 2: Convert to fraction form
    21,147.68/29,180.76 = 12,073.16/x
  3. Step 3: Cross multiply
    21,147.68x = 29,180.76 × 12,073.16
  4. Step 4: Simplify right side
    21,147.68x = 352,303,984.40
  5. Step 5: Solve for x
    x = 352,303,984.40/21,147.68
  6. Step 6: Final answer
    x = 16,659.23

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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.