Home / 13,581.06-18,743.07-7,915.50

Finding the Fourth Proportional to 13,581.06, 18,743.07 and 7,915.50

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Solution

The fourth proportional to 13,581.06, 18,743.07 and 7,915.50 is: 10,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.06 : 18,743.07 = 7,915.50 : x
  2. Step 2: Convert to fraction form
    13,581.06/18,743.07 = 7,915.50/x
  3. Step 3: Cross multiply
    13,581.06x = 18,743.07 × 7,915.50
  4. Step 4: Simplify right side
    13,581.06x = 148,360,770.59
  5. Step 5: Solve for x
    x = 148,360,770.59/13,581.06
  6. Step 6: Final answer
    x = 10,924.09

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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.