Home / 13,110.80-19,666.20-5,325.20

Finding the Fourth Proportional to 13,110.80, 19,666.20 and 5,325.20

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Solution

The fourth proportional to 13,110.80, 19,666.20 and 5,325.20 is: 7,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.80 : 19,666.20 = 5,325.20 : x
  2. Step 2: Convert to fraction form
    13,110.80/19,666.20 = 5,325.20/x
  3. Step 3: Cross multiply
    13,110.80x = 19,666.20 × 5,325.20
  4. Step 4: Simplify right side
    13,110.80x = 104,726,448.24
  5. Step 5: Solve for x
    x = 104,726,448.24/13,110.80
  6. Step 6: Final answer
    x = 7,987.80

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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.