Home / 21,700.77-29,965.59-13,757.10

Finding the Fourth Proportional to 21,700.77, 29,965.59 and 13,757.10

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Solution

The fourth proportional to 21,700.77, 29,965.59 and 13,757.10 is: 18,996.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.77 : 29,965.59 = 13,757.10 : x
  2. Step 2: Convert to fraction form
    21,700.77/29,965.59 = 13,757.10/x
  3. Step 3: Cross multiply
    21,700.77x = 29,965.59 × 13,757.10
  4. Step 4: Simplify right side
    21,700.77x = 412,239,618.19
  5. Step 5: Solve for x
    x = 412,239,618.19/21,700.77
  6. Step 6: Final answer
    x = 18,996.54

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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.