Home / 12,638.07-18,958.32-5,242.37

Finding the Fourth Proportional to 12,638.07, 18,958.32 and 5,242.37

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Solution

The fourth proportional to 12,638.07, 18,958.32 and 5,242.37 is: 7,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.07 : 18,958.32 = 5,242.37 : x
  2. Step 2: Convert to fraction form
    12,638.07/18,958.32 = 5,242.37/x
  3. Step 3: Cross multiply
    12,638.07x = 18,958.32 × 5,242.37
  4. Step 4: Simplify right side
    12,638.07x = 99,386,433.23
  5. Step 5: Solve for x
    x = 99,386,433.23/12,638.07
  6. Step 6: Final answer
    x = 7,864.05

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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.