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Finding the Fourth Proportional to 15,989.13, 22,065.03 and 9,278.73

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Solution

The fourth proportional to 15,989.13, 22,065.03 and 9,278.73 is: 12,804.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.13 : 22,065.03 = 9,278.73 : x
  2. Step 2: Convert to fraction form
    15,989.13/22,065.03 = 9,278.73/x
  3. Step 3: Cross multiply
    15,989.13x = 22,065.03 × 9,278.73
  4. Step 4: Simplify right side
    15,989.13x = 204,735,455.81
  5. Step 5: Solve for x
    x = 204,735,455.81/15,989.13
  6. Step 6: Final answer
    x = 12,804.67

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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.