Home / 18,915.22-28,293.81-13,292.48

Finding the Fourth Proportional to 18,915.22, 28,293.81 and 13,292.48

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Solution

The fourth proportional to 18,915.22, 28,293.81 and 13,292.48 is: 19,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.22 : 28,293.81 = 13,292.48 : x
  2. Step 2: Convert to fraction form
    18,915.22/28,293.81 = 13,292.48/x
  3. Step 3: Cross multiply
    18,915.22x = 28,293.81 × 13,292.48
  4. Step 4: Simplify right side
    18,915.22x = 376,094,903.55
  5. Step 5: Solve for x
    x = 376,094,903.55/18,915.22
  6. Step 6: Final answer
    x = 19,883.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.