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Finding the Fourth Proportional to 13,510.72, 18,644.74 and 7,542.32

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Solution

The fourth proportional to 13,510.72, 18,644.74 and 7,542.32 is: 10,408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.72 : 18,644.74 = 7,542.32 : x
  2. Step 2: Convert to fraction form
    13,510.72/18,644.74 = 7,542.32/x
  3. Step 3: Cross multiply
    13,510.72x = 18,644.74 × 7,542.32
  4. Step 4: Simplify right side
    13,510.72x = 140,624,595.40
  5. Step 5: Solve for x
    x = 140,624,595.40/13,510.72
  6. Step 6: Final answer
    x = 10,408.37

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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.