Home / 13,130.80-19,700.91-5,631.22

Finding the Fourth Proportional to 13,130.80, 19,700.91 and 5,631.22

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Solution

The fourth proportional to 13,130.80, 19,700.91 and 5,631.22 is: 8,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.80 : 19,700.91 = 5,631.22 : x
  2. Step 2: Convert to fraction form
    13,130.80/19,700.91 = 5,631.22/x
  3. Step 3: Cross multiply
    13,130.80x = 19,700.91 × 5,631.22
  4. Step 4: Simplify right side
    13,130.80x = 110,940,158.41
  5. Step 5: Solve for x
    x = 110,940,158.41/13,130.80
  6. Step 6: Final answer
    x = 8,448.85

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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.