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Finding the Fourth Proportional to 10,661.55, 14,712.73 and 6,185.71

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Solution

The fourth proportional to 10,661.55, 14,712.73 and 6,185.71 is: 8,536.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.55 : 14,712.73 = 6,185.71 : x
  2. Step 2: Convert to fraction form
    10,661.55/14,712.73 = 6,185.71/x
  3. Step 3: Cross multiply
    10,661.55x = 14,712.73 × 6,185.71
  4. Step 4: Simplify right side
    10,661.55x = 91,008,681.09
  5. Step 5: Solve for x
    x = 91,008,681.09/10,661.55
  6. Step 6: Final answer
    x = 8,536.16

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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.