Home / 12,257.60-18,386.40-8,801.60

Finding the Fourth Proportional to 12,257.60, 18,386.40 and 8,801.60

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Solution

The fourth proportional to 12,257.60, 18,386.40 and 8,801.60 is: 13,202.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.60 : 18,386.40 = 8,801.60 : x
  2. Step 2: Convert to fraction form
    12,257.60/18,386.40 = 8,801.60/x
  3. Step 3: Cross multiply
    12,257.60x = 18,386.40 × 8,801.60
  4. Step 4: Simplify right side
    12,257.60x = 161,829,738.24
  5. Step 5: Solve for x
    x = 161,829,738.24/12,257.60
  6. Step 6: Final answer
    x = 13,202.40

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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.