Home / 21,176.30-29,228.60-14,381.81

Finding the Fourth Proportional to 21,176.30, 29,228.60 and 14,381.81

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Solution

The fourth proportional to 21,176.30, 29,228.60 and 14,381.81 is: 19,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.30 : 29,228.60 = 14,381.81 : x
  2. Step 2: Convert to fraction form
    21,176.30/29,228.60 = 14,381.81/x
  3. Step 3: Cross multiply
    21,176.30x = 29,228.60 × 14,381.81
  4. Step 4: Simplify right side
    21,176.30x = 420,360,280.79
  5. Step 5: Solve for x
    x = 420,360,280.79/21,176.30
  6. Step 6: Final answer
    x = 19,850.51

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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.