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Finding the Fourth Proportional to 14,751.79, 20,310.45 and 13,745.77

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Solution

The fourth proportional to 14,751.79, 20,310.45 and 13,745.77 is: 18,925.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,751.79 : 20,310.45 = 13,745.77 : x
  2. Step 2: Convert to fraction form
    14,751.79/20,310.45 = 13,745.77/x
  3. Step 3: Cross multiply
    14,751.79x = 20,310.45 × 13,745.77
  4. Step 4: Simplify right side
    14,751.79x = 279,182,671.97
  5. Step 5: Solve for x
    x = 279,182,671.97/14,751.79
  6. Step 6: Final answer
    x = 18,925.35

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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.