Home / 15,918.08-21,968.32-8,845.92

Finding the Fourth Proportional to 15,918.08, 21,968.32 and 8,845.92

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Solution

The fourth proportional to 15,918.08, 21,968.32 and 8,845.92 is: 12,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.08 : 21,968.32 = 8,845.92 : x
  2. Step 2: Convert to fraction form
    15,918.08/21,968.32 = 8,845.92/x
  3. Step 3: Cross multiply
    15,918.08x = 21,968.32 × 8,845.92
  4. Step 4: Simplify right side
    15,918.08x = 194,330,001.25
  5. Step 5: Solve for x
    x = 194,330,001.25/15,918.08
  6. Step 6: Final answer
    x = 12,208.13

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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.