Home / 15,786.48-21,784.50-9,071.04

Finding the Fourth Proportional to 15,786.48, 21,784.50 and 9,071.04

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Solution

The fourth proportional to 15,786.48, 21,784.50 and 9,071.04 is: 12,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.48 : 21,784.50 = 9,071.04 : x
  2. Step 2: Convert to fraction form
    15,786.48/21,784.50 = 9,071.04/x
  3. Step 3: Cross multiply
    15,786.48x = 21,784.50 × 9,071.04
  4. Step 4: Simplify right side
    15,786.48x = 197,608,070.88
  5. Step 5: Solve for x
    x = 197,608,070.88/15,786.48
  6. Step 6: Final answer
    x = 12,517.55

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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.