Home / 13,255.48-18,293.04-7,287.60

Finding the Fourth Proportional to 13,255.48, 18,293.04 and 7,287.60

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Solution

The fourth proportional to 13,255.48, 18,293.04 and 7,287.60 is: 10,057.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.48 : 18,293.04 = 7,287.60 : x
  2. Step 2: Convert to fraction form
    13,255.48/18,293.04 = 7,287.60/x
  3. Step 3: Cross multiply
    13,255.48x = 18,293.04 × 7,287.60
  4. Step 4: Simplify right side
    13,255.48x = 133,312,358.30
  5. Step 5: Solve for x
    x = 133,312,358.30/13,255.48
  6. Step 6: Final answer
    x = 10,057.15

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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.