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Finding the Fourth Proportional to 13,502.40, 20,222.28 and 13,035.18

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Solution

The fourth proportional to 13,502.40, 20,222.28 and 13,035.18 is: 19,522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,502.40 : 20,222.28 = 13,035.18 : x
  2. Step 2: Convert to fraction form
    13,502.40/20,222.28 = 13,035.18/x
  3. Step 3: Cross multiply
    13,502.40x = 20,222.28 × 13,035.18
  4. Step 4: Simplify right side
    13,502.40x = 263,601,059.81
  5. Step 5: Solve for x
    x = 263,601,059.81/13,502.40
  6. Step 6: Final answer
    x = 19,522.53

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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.