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Finding the Fourth Proportional to 12,969.63, 17,877.15 and 11,263.77

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Solution

The fourth proportional to 12,969.63, 17,877.15 and 11,263.77 is: 15,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.63 : 17,877.15 = 11,263.77 : x
  2. Step 2: Convert to fraction form
    12,969.63/17,877.15 = 11,263.77/x
  3. Step 3: Cross multiply
    12,969.63x = 17,877.15 × 11,263.77
  4. Step 4: Simplify right side
    12,969.63x = 201,364,105.86
  5. Step 5: Solve for x
    x = 201,364,105.86/12,969.63
  6. Step 6: Final answer
    x = 15,525.82

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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.