Home / 21,081.53-29,088.23-12,580.94

Finding the Fourth Proportional to 21,081.53, 29,088.23 and 12,580.94

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Solution

The fourth proportional to 21,081.53, 29,088.23 and 12,580.94 is: 17,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.53 : 29,088.23 = 12,580.94 : x
  2. Step 2: Convert to fraction form
    21,081.53/29,088.23 = 12,580.94/x
  3. Step 3: Cross multiply
    21,081.53x = 29,088.23 × 12,580.94
  4. Step 4: Simplify right side
    21,081.53x = 365,957,286.15
  5. Step 5: Solve for x
    x = 365,957,286.15/21,081.53
  6. Step 6: Final answer
    x = 17,359.14

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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.