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Finding the Fourth Proportional to 18,477, 25,498.98 and 10,520.64

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Solution

The fourth proportional to 18,477, 25,498.98 and 10,520.64 is: 14,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477 : 25,498.98 = 10,520.64 : x
  2. Step 2: Convert to fraction form
    18,477/25,498.98 = 10,520.64/x
  3. Step 3: Cross multiply
    18,477x = 25,498.98 × 10,520.64
  4. Step 4: Simplify right side
    18,477x = 268,265,588.95
  5. Step 5: Solve for x
    x = 268,265,588.95/18,477
  6. Step 6: Final answer
    x = 14,518.89

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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.