Home / 21,154.16-29,193.54-11,722.64

Finding the Fourth Proportional to 21,154.16, 29,193.54 and 11,722.64

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Solution

The fourth proportional to 21,154.16, 29,193.54 and 11,722.64 is: 16,177.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.16 : 29,193.54 = 11,722.64 : x
  2. Step 2: Convert to fraction form
    21,154.16/29,193.54 = 11,722.64/x
  3. Step 3: Cross multiply
    21,154.16x = 29,193.54 × 11,722.64
  4. Step 4: Simplify right side
    21,154.16x = 342,225,359.75
  5. Step 5: Solve for x
    x = 342,225,359.75/21,154.16
  6. Step 6: Final answer
    x = 16,177.69

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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.