Home / 13,128.04-19,693.28-5,228.65

Finding the Fourth Proportional to 13,128.04, 19,693.28 and 5,228.65

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Solution

The fourth proportional to 13,128.04, 19,693.28 and 5,228.65 is: 7,843.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.04 : 19,693.28 = 5,228.65 : x
  2. Step 2: Convert to fraction form
    13,128.04/19,693.28 = 5,228.65/x
  3. Step 3: Cross multiply
    13,128.04x = 19,693.28 × 5,228.65
  4. Step 4: Simplify right side
    13,128.04x = 102,969,232.31
  5. Step 5: Solve for x
    x = 102,969,232.31/13,128.04
  6. Step 6: Final answer
    x = 7,843.46

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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.