Home / 28,065.09-38,704.53-21,682.08

Finding the Fourth Proportional to 28,065.09, 38,704.53 and 21,682.08

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Solution

The fourth proportional to 28,065.09, 38,704.53 and 21,682.08 is: 29,901.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.09 : 38,704.53 = 21,682.08 : x
  2. Step 2: Convert to fraction form
    28,065.09/38,704.53 = 21,682.08/x
  3. Step 3: Cross multiply
    28,065.09x = 38,704.53 × 21,682.08
  4. Step 4: Simplify right side
    28,065.09x = 839,194,715.82
  5. Step 5: Solve for x
    x = 839,194,715.82/28,065.09
  6. Step 6: Final answer
    x = 29,901.73

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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.