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Finding the Fourth Proportional to 21,369.16, 32,025.81 and 15,465.92

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Solution

The fourth proportional to 21,369.16, 32,025.81 and 15,465.92 is: 23,178.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.16 : 32,025.81 = 15,465.92 : x
  2. Step 2: Convert to fraction form
    21,369.16/32,025.81 = 15,465.92/x
  3. Step 3: Cross multiply
    21,369.16x = 32,025.81 × 15,465.92
  4. Step 4: Simplify right side
    21,369.16x = 495,308,615.40
  5. Step 5: Solve for x
    x = 495,308,615.40/21,369.16
  6. Step 6: Final answer
    x = 23,178.67

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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.