Home / 15,918.39-21,967.47-9,953.55

Finding the Fourth Proportional to 15,918.39, 21,967.47 and 9,953.55

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Solution

The fourth proportional to 15,918.39, 21,967.47 and 9,953.55 is: 13,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.39 : 21,967.47 = 9,953.55 : x
  2. Step 2: Convert to fraction form
    15,918.39/21,967.47 = 9,953.55/x
  3. Step 3: Cross multiply
    15,918.39x = 21,967.47 × 9,953.55
  4. Step 4: Simplify right side
    15,918.39x = 218,654,311.02
  5. Step 5: Solve for x
    x = 218,654,311.02/15,918.39
  6. Step 6: Final answer
    x = 13,735.96

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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.