Home / 13,875.03-20,800.13-5,103.81

Finding the Fourth Proportional to 13,875.03, 20,800.13 and 5,103.81

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Solution

The fourth proportional to 13,875.03, 20,800.13 and 5,103.81 is: 7,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.03 : 20,800.13 = 5,103.81 : x
  2. Step 2: Convert to fraction form
    13,875.03/20,800.13 = 5,103.81/x
  3. Step 3: Cross multiply
    13,875.03x = 20,800.13 × 5,103.81
  4. Step 4: Simplify right side
    13,875.03x = 106,159,885.98
  5. Step 5: Solve for x
    x = 106,159,885.98/13,875.03
  6. Step 6: Final answer
    x = 7,651.15

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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.