Home / 15,350.86-21,185.40-8,636.08

Finding the Fourth Proportional to 15,350.86, 21,185.40 and 8,636.08

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Solution

The fourth proportional to 15,350.86, 21,185.40 and 8,636.08 is: 11,918.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.86 : 21,185.40 = 8,636.08 : x
  2. Step 2: Convert to fraction form
    15,350.86/21,185.40 = 8,636.08/x
  3. Step 3: Cross multiply
    15,350.86x = 21,185.40 × 8,636.08
  4. Step 4: Simplify right side
    15,350.86x = 182,958,809.23
  5. Step 5: Solve for x
    x = 182,958,809.23/15,350.86
  6. Step 6: Final answer
    x = 11,918.47

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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.