Home / 18,783.06-25,920.18-10,829.76

Finding the Fourth Proportional to 18,783.06, 25,920.18 and 10,829.76

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Solution

The fourth proportional to 18,783.06, 25,920.18 and 10,829.76 is: 14,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.06 : 25,920.18 = 10,829.76 : x
  2. Step 2: Convert to fraction form
    18,783.06/25,920.18 = 10,829.76/x
  3. Step 3: Cross multiply
    18,783.06x = 25,920.18 × 10,829.76
  4. Step 4: Simplify right side
    18,783.06x = 280,709,328.56
  5. Step 5: Solve for x
    x = 280,709,328.56/18,783.06
  6. Step 6: Final answer
    x = 14,944.81

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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.