Home / 10,389.20-14,336.49-5,672.54

Finding the Fourth Proportional to 10,389.20, 14,336.49 and 5,672.54

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Solution

The fourth proportional to 10,389.20, 14,336.49 and 5,672.54 is: 7,827.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.20 : 14,336.49 = 5,672.54 : x
  2. Step 2: Convert to fraction form
    10,389.20/14,336.49 = 5,672.54/x
  3. Step 3: Cross multiply
    10,389.20x = 14,336.49 × 5,672.54
  4. Step 4: Simplify right side
    10,389.20x = 81,324,312.98
  5. Step 5: Solve for x
    x = 81,324,312.98/10,389.20
  6. Step 6: Final answer
    x = 7,827.77

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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.