Home / 21,156.10-29,196.58-11,724.46

Finding the Fourth Proportional to 21,156.10, 29,196.58 and 11,724.46

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Solution

The fourth proportional to 21,156.10, 29,196.58 and 11,724.46 is: 16,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.10 : 29,196.58 = 11,724.46 : x
  2. Step 2: Convert to fraction form
    21,156.10/29,196.58 = 11,724.46/x
  3. Step 3: Cross multiply
    21,156.10x = 29,196.58 × 11,724.46
  4. Step 4: Simplify right side
    21,156.10x = 342,314,134.35
  5. Step 5: Solve for x
    x = 342,314,134.35/21,156.10
  6. Step 6: Final answer
    x = 16,180.40

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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.