Home / 13,513.50-20,265.09-6,491.51

Finding the Fourth Proportional to 13,513.50, 20,265.09 and 6,491.51

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Solution

The fourth proportional to 13,513.50, 20,265.09 and 6,491.51 is: 9,734.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.50 : 20,265.09 = 6,491.51 : x
  2. Step 2: Convert to fraction form
    13,513.50/20,265.09 = 6,491.51/x
  3. Step 3: Cross multiply
    13,513.50x = 20,265.09 × 6,491.51
  4. Step 4: Simplify right side
    13,513.50x = 131,550,984.71
  5. Step 5: Solve for x
    x = 131,550,984.71/13,513.50
  6. Step 6: Final answer
    x = 9,734.78

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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.