Home / 13,013.06-19,521.68-5,619.78

Finding the Fourth Proportional to 13,013.06, 19,521.68 and 5,619.78

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Solution

The fourth proportional to 13,013.06, 19,521.68 and 5,619.78 is: 8,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.06 : 19,521.68 = 5,619.78 : x
  2. Step 2: Convert to fraction form
    13,013.06/19,521.68 = 5,619.78/x
  3. Step 3: Cross multiply
    13,013.06x = 19,521.68 × 5,619.78
  4. Step 4: Simplify right side
    13,013.06x = 109,707,518.73
  5. Step 5: Solve for x
    x = 109,707,518.73/13,013.06
  6. Step 6: Final answer
    x = 8,430.57

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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.