Home / 21,387.58-32,081.39-5,805.21

Finding the Fourth Proportional to 21,387.58, 32,081.39 and 5,805.21

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Solution

The fourth proportional to 21,387.58, 32,081.39 and 5,805.21 is: 8,707.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.58 : 32,081.39 = 5,805.21 : x
  2. Step 2: Convert to fraction form
    21,387.58/32,081.39 = 5,805.21/x
  3. Step 3: Cross multiply
    21,387.58x = 32,081.39 × 5,805.21
  4. Step 4: Simplify right side
    21,387.58x = 186,239,206.04
  5. Step 5: Solve for x
    x = 186,239,206.04/21,387.58
  6. Step 6: Final answer
    x = 8,707.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.