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Finding the Fourth Proportional to 13,235.79, 18,253.20 and 8,993.20

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Solution

The fourth proportional to 13,235.79, 18,253.20 and 8,993.20 is: 12,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.79 : 18,253.20 = 8,993.20 : x
  2. Step 2: Convert to fraction form
    13,235.79/18,253.20 = 8,993.20/x
  3. Step 3: Cross multiply
    13,235.79x = 18,253.20 × 8,993.20
  4. Step 4: Simplify right side
    13,235.79x = 164,154,678.24
  5. Step 5: Solve for x
    x = 164,154,678.24/13,235.79
  6. Step 6: Final answer
    x = 12,402.33

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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.