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Finding the Fourth Proportional to 13,325.99, 19,981.99 and 6,655.33

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Solution

The fourth proportional to 13,325.99, 19,981.99 and 6,655.33 is: 9,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.99 : 19,981.99 = 6,655.33 : x
  2. Step 2: Convert to fraction form
    13,325.99/19,981.99 = 6,655.33/x
  3. Step 3: Cross multiply
    13,325.99x = 19,981.99 × 6,655.33
  4. Step 4: Simplify right side
    13,325.99x = 132,986,770.80
  5. Step 5: Solve for x
    x = 132,986,770.80/13,325.99
  6. Step 6: Final answer
    x = 9,979.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.