Home / 21,130.74-29,161.08-11,700.18

Finding the Fourth Proportional to 21,130.74, 29,161.08 and 11,700.18

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Solution

The fourth proportional to 21,130.74, 29,161.08 and 11,700.18 is: 16,146.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.74 : 29,161.08 = 11,700.18 : x
  2. Step 2: Convert to fraction form
    21,130.74/29,161.08 = 11,700.18/x
  3. Step 3: Cross multiply
    21,130.74x = 29,161.08 × 11,700.18
  4. Step 4: Simplify right side
    21,130.74x = 341,189,884.99
  5. Step 5: Solve for x
    x = 341,189,884.99/21,130.74
  6. Step 6: Final answer
    x = 16,146.61

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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.