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Finding the Fourth Proportional to 18,792.47, 28,150.43 and 8,901.76

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Solution

The fourth proportional to 18,792.47, 28,150.43 and 8,901.76 is: 13,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.47 : 28,150.43 = 8,901.76 : x
  2. Step 2: Convert to fraction form
    18,792.47/28,150.43 = 8,901.76/x
  3. Step 3: Cross multiply
    18,792.47x = 28,150.43 × 8,901.76
  4. Step 4: Simplify right side
    18,792.47x = 250,588,371.76
  5. Step 5: Solve for x
    x = 250,588,371.76/18,792.47
  6. Step 6: Final answer
    x = 13,334.51

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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.