Home / 13,712.52-18,915.96-9,228.60

Finding the Fourth Proportional to 13,712.52, 18,915.96 and 9,228.60

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Solution

The fourth proportional to 13,712.52, 18,915.96 and 9,228.60 is: 12,730.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.52 : 18,915.96 = 9,228.60 : x
  2. Step 2: Convert to fraction form
    13,712.52/18,915.96 = 9,228.60/x
  3. Step 3: Cross multiply
    13,712.52x = 18,915.96 × 9,228.60
  4. Step 4: Simplify right side
    13,712.52x = 174,567,828.46
  5. Step 5: Solve for x
    x = 174,567,828.46/13,712.52
  6. Step 6: Final answer
    x = 12,730.54

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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.