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Finding the Fourth Proportional to 12,326.79, 17,011.08 and 11,385.01

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Solution

The fourth proportional to 12,326.79, 17,011.08 and 11,385.01 is: 15,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,326.79 : 17,011.08 = 11,385.01 : x
  2. Step 2: Convert to fraction form
    12,326.79/17,011.08 = 11,385.01/x
  3. Step 3: Cross multiply
    12,326.79x = 17,011.08 × 11,385.01
  4. Step 4: Simplify right side
    12,326.79x = 193,671,258.99
  5. Step 5: Solve for x
    x = 193,671,258.99/12,326.79
  6. Step 6: Final answer
    x = 15,711.41

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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.