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Finding the Fourth Proportional to 12,912.40, 19,325.40 and 9,024.40

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Solution

The fourth proportional to 12,912.40, 19,325.40 and 9,024.40 is: 13,506.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.40 : 19,325.40 = 9,024.40 : x
  2. Step 2: Convert to fraction form
    12,912.40/19,325.40 = 9,024.40/x
  3. Step 3: Cross multiply
    12,912.40x = 19,325.40 × 9,024.40
  4. Step 4: Simplify right side
    12,912.40x = 174,400,139.76
  5. Step 5: Solve for x
    x = 174,400,139.76/12,912.40
  6. Step 6: Final answer
    x = 13,506.41

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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.