Home / 13,875.12-20,793.44-7,627.60

Finding the Fourth Proportional to 13,875.12, 20,793.44 and 7,627.60

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Solution

The fourth proportional to 13,875.12, 20,793.44 and 7,627.60 is: 11,430.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.12 : 20,793.44 = 7,627.60 : x
  2. Step 2: Convert to fraction form
    13,875.12/20,793.44 = 7,627.60/x
  3. Step 3: Cross multiply
    13,875.12x = 20,793.44 × 7,627.60
  4. Step 4: Simplify right side
    13,875.12x = 158,604,042.94
  5. Step 5: Solve for x
    x = 158,604,042.94/13,875.12
  6. Step 6: Final answer
    x = 11,430.82

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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.