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Finding the Fourth Proportional to 20,395.92, 30,587.76 and 7,246.56

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Solution

The fourth proportional to 20,395.92, 30,587.76 and 7,246.56 is: 10,867.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.92 : 30,587.76 = 7,246.56 : x
  2. Step 2: Convert to fraction form
    20,395.92/30,587.76 = 7,246.56/x
  3. Step 3: Cross multiply
    20,395.92x = 30,587.76 × 7,246.56
  4. Step 4: Simplify right side
    20,395.92x = 221,656,038.11
  5. Step 5: Solve for x
    x = 221,656,038.11/20,395.92
  6. Step 6: Final answer
    x = 10,867.67

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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.