Home / 12,780.64-17,636.04-9,425.26

Finding the Fourth Proportional to 12,780.64, 17,636.04 and 9,425.26

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Solution

The fourth proportional to 12,780.64, 17,636.04 and 9,425.26 is: 13,005.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.64 : 17,636.04 = 9,425.26 : x
  2. Step 2: Convert to fraction form
    12,780.64/17,636.04 = 9,425.26/x
  3. Step 3: Cross multiply
    12,780.64x = 17,636.04 × 9,425.26
  4. Step 4: Simplify right side
    12,780.64x = 166,224,127.06
  5. Step 5: Solve for x
    x = 166,224,127.06/12,780.64
  6. Step 6: Final answer
    x = 13,005.94

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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.