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Finding the Fourth Proportional to 18,950.84, 28,430.37 and 7,264.07

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Solution

The fourth proportional to 18,950.84, 28,430.37 and 7,264.07 is: 10,897.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.84 : 28,430.37 = 7,264.07 : x
  2. Step 2: Convert to fraction form
    18,950.84/28,430.37 = 7,264.07/x
  3. Step 3: Cross multiply
    18,950.84x = 28,430.37 × 7,264.07
  4. Step 4: Simplify right side
    18,950.84x = 206,520,197.81
  5. Step 5: Solve for x
    x = 206,520,197.81/18,950.84
  6. Step 6: Final answer
    x = 10,897.68

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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.