Home / 13,013.20-19,516.88-5,986.47

Finding the Fourth Proportional to 13,013.20, 19,516.88 and 5,986.47

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Solution

The fourth proportional to 13,013.20, 19,516.88 and 5,986.47 is: 8,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.20 : 19,516.88 = 5,986.47 : x
  2. Step 2: Convert to fraction form
    13,013.20/19,516.88 = 5,986.47/x
  3. Step 3: Cross multiply
    13,013.20x = 19,516.88 × 5,986.47
  4. Step 4: Simplify right side
    13,013.20x = 116,837,119.03
  5. Step 5: Solve for x
    x = 116,837,119.03/13,013.20
  6. Step 6: Final answer
    x = 8,978.35

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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.