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Finding the Fourth Proportional to 12,792.69, 17,653.85 and 7,127.51

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Solution

The fourth proportional to 12,792.69, 17,653.85 and 7,127.51 is: 9,835.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.69 : 17,653.85 = 7,127.51 : x
  2. Step 2: Convert to fraction form
    12,792.69/17,653.85 = 7,127.51/x
  3. Step 3: Cross multiply
    12,792.69x = 17,653.85 × 7,127.51
  4. Step 4: Simplify right side
    12,792.69x = 125,827,868.51
  5. Step 5: Solve for x
    x = 125,827,868.51/12,792.69
  6. Step 6: Final answer
    x = 9,835.92

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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.