Home / 13,584.48-18,742.32-7,615.28

Finding the Fourth Proportional to 13,584.48, 18,742.32 and 7,615.28

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Solution

The fourth proportional to 13,584.48, 18,742.32 and 7,615.28 is: 10,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584.48 : 18,742.32 = 7,615.28 : x
  2. Step 2: Convert to fraction form
    13,584.48/18,742.32 = 7,615.28/x
  3. Step 3: Cross multiply
    13,584.48x = 18,742.32 × 7,615.28
  4. Step 4: Simplify right side
    13,584.48x = 142,728,014.65
  5. Step 5: Solve for x
    x = 142,728,014.65/13,584.48
  6. Step 6: Final answer
    x = 10,506.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.