Home / 13,242.86-18,274.23-7,274.78

Finding the Fourth Proportional to 13,242.86, 18,274.23 and 7,274.78

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Solution

The fourth proportional to 13,242.86, 18,274.23 and 7,274.78 is: 10,038.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.86 : 18,274.23 = 7,274.78 : x
  2. Step 2: Convert to fraction form
    13,242.86/18,274.23 = 7,274.78/x
  3. Step 3: Cross multiply
    13,242.86x = 18,274.23 × 7,274.78
  4. Step 4: Simplify right side
    13,242.86x = 132,940,911.55
  5. Step 5: Solve for x
    x = 132,940,911.55/13,242.86
  6. Step 6: Final answer
    x = 10,038.69

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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.