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Finding the Fourth Proportional to 19,900.51, 29,850.90 and 9,480.67

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Solution

The fourth proportional to 19,900.51, 29,850.90 and 9,480.67 is: 14,221.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.51 : 29,850.90 = 9,480.67 : x
  2. Step 2: Convert to fraction form
    19,900.51/29,850.90 = 9,480.67/x
  3. Step 3: Cross multiply
    19,900.51x = 29,850.90 × 9,480.67
  4. Step 4: Simplify right side
    19,900.51x = 283,006,532.10
  5. Step 5: Solve for x
    x = 283,006,532.10/19,900.51
  6. Step 6: Final answer
    x = 14,221.07

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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.