Home / 13,808.78-20,700.74-5,037.56

Finding the Fourth Proportional to 13,808.78, 20,700.74 and 5,037.56

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Solution

The fourth proportional to 13,808.78, 20,700.74 and 5,037.56 is: 7,551.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.78 : 20,700.74 = 5,037.56 : x
  2. Step 2: Convert to fraction form
    13,808.78/20,700.74 = 5,037.56/x
  3. Step 3: Cross multiply
    13,808.78x = 20,700.74 × 5,037.56
  4. Step 4: Simplify right side
    13,808.78x = 104,281,219.79
  5. Step 5: Solve for x
    x = 104,281,219.79/13,808.78
  6. Step 6: Final answer
    x = 7,551.81

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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.