Home / 15,613.48-21,553.62-9,955.82

Finding the Fourth Proportional to 15,613.48, 21,553.62 and 9,955.82

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Solution

The fourth proportional to 15,613.48, 21,553.62 and 9,955.82 is: 13,743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.48 : 21,553.62 = 9,955.82 : x
  2. Step 2: Convert to fraction form
    15,613.48/21,553.62 = 9,955.82/x
  3. Step 3: Cross multiply
    15,613.48x = 21,553.62 × 9,955.82
  4. Step 4: Simplify right side
    15,613.48x = 214,583,961.07
  5. Step 5: Solve for x
    x = 214,583,961.07/15,613.48
  6. Step 6: Final answer
    x = 13,743.51

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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.