Home / 15,387.58-21,231.07-8,673.22

Finding the Fourth Proportional to 15,387.58, 21,231.07 and 8,673.22

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Solution

The fourth proportional to 15,387.58, 21,231.07 and 8,673.22 is: 11,966.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.58 : 21,231.07 = 8,673.22 : x
  2. Step 2: Convert to fraction form
    15,387.58/21,231.07 = 8,673.22/x
  3. Step 3: Cross multiply
    15,387.58x = 21,231.07 × 8,673.22
  4. Step 4: Simplify right side
    15,387.58x = 184,141,740.95
  5. Step 5: Solve for x
    x = 184,141,740.95/15,387.58
  6. Step 6: Final answer
    x = 11,966.91

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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.