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Finding the Fourth Proportional to 12,792.51, 17,653.38 and 7,127.25

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Solution

The fourth proportional to 12,792.51, 17,653.38 and 7,127.25 is: 9,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.51 : 17,653.38 = 7,127.25 : x
  2. Step 2: Convert to fraction form
    12,792.51/17,653.38 = 7,127.25/x
  3. Step 3: Cross multiply
    12,792.51x = 17,653.38 × 7,127.25
  4. Step 4: Simplify right side
    12,792.51x = 125,820,052.61
  5. Step 5: Solve for x
    x = 125,820,052.61/12,792.51
  6. Step 6: Final answer
    x = 9,835.45

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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.