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Finding the Fourth Proportional to 12,347.59, 17,003.77 and 10,731.79

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Solution

The fourth proportional to 12,347.59, 17,003.77 and 10,731.79 is: 14,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.59 : 17,003.77 = 10,731.79 : x
  2. Step 2: Convert to fraction form
    12,347.59/17,003.77 = 10,731.79/x
  3. Step 3: Cross multiply
    12,347.59x = 17,003.77 × 10,731.79
  4. Step 4: Simplify right side
    12,347.59x = 182,480,943.64
  5. Step 5: Solve for x
    x = 182,480,943.64/12,347.59
  6. Step 6: Final answer
    x = 14,778.67

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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.