Home / 10,327.20-15,529.20-8,637.60

Finding the Fourth Proportional to 10,327.20, 15,529.20 and 8,637.60

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Solution

The fourth proportional to 10,327.20, 15,529.20 and 8,637.60 is: 12,988.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,327.20 : 15,529.20 = 8,637.60 : x
  2. Step 2: Convert to fraction form
    10,327.20/15,529.20 = 8,637.60/x
  3. Step 3: Cross multiply
    10,327.20x = 15,529.20 × 8,637.60
  4. Step 4: Simplify right side
    10,327.20x = 134,135,017.92
  5. Step 5: Solve for x
    x = 134,135,017.92/10,327.20
  6. Step 6: Final answer
    x = 12,988.52

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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.