Home / 13,503.76-18,639.40-10,983.92

Finding the Fourth Proportional to 13,503.76, 18,639.40 and 10,983.92

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Solution

The fourth proportional to 13,503.76, 18,639.40 and 10,983.92 is: 15,161.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.76 : 18,639.40 = 10,983.92 : x
  2. Step 2: Convert to fraction form
    13,503.76/18,639.40 = 10,983.92/x
  3. Step 3: Cross multiply
    13,503.76x = 18,639.40 × 10,983.92
  4. Step 4: Simplify right side
    13,503.76x = 204,733,678.45
  5. Step 5: Solve for x
    x = 204,733,678.45/13,503.76
  6. Step 6: Final answer
    x = 15,161.23

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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.