Home / 13,013.81-19,520.65-3,153.09

Finding the Fourth Proportional to 13,013.81, 19,520.65 and 3,153.09

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Solution

The fourth proportional to 13,013.81, 19,520.65 and 3,153.09 is: 4,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.81 : 19,520.65 = 3,153.09 : x
  2. Step 2: Convert to fraction form
    13,013.81/19,520.65 = 3,153.09/x
  3. Step 3: Cross multiply
    13,013.81x = 19,520.65 × 3,153.09
  4. Step 4: Simplify right side
    13,013.81x = 61,550,358.43
  5. Step 5: Solve for x
    x = 61,550,358.43/13,013.81
  6. Step 6: Final answer
    x = 4,729.62

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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.