Home / 21,130.26-29,160.17-12,176.25

Finding the Fourth Proportional to 21,130.26, 29,160.17 and 12,176.25

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Solution

The fourth proportional to 21,130.26, 29,160.17 and 12,176.25 is: 16,803.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.26 : 29,160.17 = 12,176.25 : x
  2. Step 2: Convert to fraction form
    21,130.26/29,160.17 = 12,176.25/x
  3. Step 3: Cross multiply
    21,130.26x = 29,160.17 × 12,176.25
  4. Step 4: Simplify right side
    21,130.26x = 355,061,519.96
  5. Step 5: Solve for x
    x = 355,061,519.96/21,130.26
  6. Step 6: Final answer
    x = 16,803.46

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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.