Home / 13,255.13-18,292.50-7,287.23

Finding the Fourth Proportional to 13,255.13, 18,292.50 and 7,287.23

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Solution

The fourth proportional to 13,255.13, 18,292.50 and 7,287.23 is: 10,056.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.13 : 18,292.50 = 7,287.23 : x
  2. Step 2: Convert to fraction form
    13,255.13/18,292.50 = 7,287.23/x
  3. Step 3: Cross multiply
    13,255.13x = 18,292.50 × 7,287.23
  4. Step 4: Simplify right side
    13,255.13x = 133,301,563.31
  5. Step 5: Solve for x
    x = 133,301,563.31/13,255.13
  6. Step 6: Final answer
    x = 10,056.61

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Double scale
Find fourth proportional to 13,256.13, 18,293.88 and 7,288.23
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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.