Home / 21,082.89-29,095.70-12,130.20

Finding the Fourth Proportional to 21,082.89, 29,095.70 and 12,130.20

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Solution

The fourth proportional to 21,082.89, 29,095.70 and 12,130.20 is: 16,740.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.89 : 29,095.70 = 12,130.20 : x
  2. Step 2: Convert to fraction form
    21,082.89/29,095.70 = 12,130.20/x
  3. Step 3: Cross multiply
    21,082.89x = 29,095.70 × 12,130.20
  4. Step 4: Simplify right side
    21,082.89x = 352,936,660.14
  5. Step 5: Solve for x
    x = 352,936,660.14/21,082.89
  6. Step 6: Final answer
    x = 16,740.43

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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.