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Finding the Fourth Proportional to 18,307.99, 25,260.49 and 10,350.05

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Solution

The fourth proportional to 18,307.99, 25,260.49 and 10,350.05 is: 14,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.99 : 25,260.49 = 10,350.05 : x
  2. Step 2: Convert to fraction form
    18,307.99/25,260.49 = 10,350.05/x
  3. Step 3: Cross multiply
    18,307.99x = 25,260.49 × 10,350.05
  4. Step 4: Simplify right side
    18,307.99x = 261,447,221.16
  5. Step 5: Solve for x
    x = 261,447,221.16/18,307.99
  6. Step 6: Final answer
    x = 14,280.50

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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.