Home / 28,384.07-39,171.22-15,808.82

Finding the Fourth Proportional to 28,384.07, 39,171.22 and 15,808.82

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Solution

The fourth proportional to 28,384.07, 39,171.22 and 15,808.82 is: 21,816.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.07 : 39,171.22 = 15,808.82 : x
  2. Step 2: Convert to fraction form
    28,384.07/39,171.22 = 15,808.82/x
  3. Step 3: Cross multiply
    28,384.07x = 39,171.22 × 15,808.82
  4. Step 4: Simplify right side
    28,384.07x = 619,250,570.30
  5. Step 5: Solve for x
    x = 619,250,570.30/28,384.07
  6. Step 6: Final answer
    x = 21,816.84

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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.