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Finding the Fourth Proportional to 14,951.79, 20,646.80 and 11,168.51

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Solution

The fourth proportional to 14,951.79, 20,646.80 and 11,168.51 is: 15,422.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,951.79 : 20,646.80 = 11,168.51 : x
  2. Step 2: Convert to fraction form
    14,951.79/20,646.80 = 11,168.51/x
  3. Step 3: Cross multiply
    14,951.79x = 20,646.80 × 11,168.51
  4. Step 4: Simplify right side
    14,951.79x = 230,593,933.14
  5. Step 5: Solve for x
    x = 230,593,933.14/14,951.79
  6. Step 6: Final answer
    x = 15,422.50

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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.