Home / 13,255.58-18,292.55-7,287.09

Finding the Fourth Proportional to 13,255.58, 18,292.55 and 7,287.09

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Solution

The fourth proportional to 13,255.58, 18,292.55 and 7,287.09 is: 10,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.58 : 18,292.55 = 7,287.09 : x
  2. Step 2: Convert to fraction form
    13,255.58/18,292.55 = 7,287.09/x
  3. Step 3: Cross multiply
    13,255.58x = 18,292.55 × 7,287.09
  4. Step 4: Simplify right side
    13,255.58x = 133,299,421.74
  5. Step 5: Solve for x
    x = 133,299,421.74/13,255.58
  6. Step 6: Final answer
    x = 10,056.10

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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.