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Finding the Fourth Proportional to 15,103.68, 20,827.20 and 10,625.92

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Solution

The fourth proportional to 15,103.68, 20,827.20 and 10,625.92 is: 14,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.68 : 20,827.20 = 10,625.92 : x
  2. Step 2: Convert to fraction form
    15,103.68/20,827.20 = 10,625.92/x
  3. Step 3: Cross multiply
    15,103.68x = 20,827.20 × 10,625.92
  4. Step 4: Simplify right side
    15,103.68x = 221,308,161.02
  5. Step 5: Solve for x
    x = 221,308,161.02/15,103.68
  6. Step 6: Final answer
    x = 14,652.60

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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.