Home / 12,444.40-18,688.20-8,772.40

Finding the Fourth Proportional to 12,444.40, 18,688.20 and 8,772.40

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Solution

The fourth proportional to 12,444.40, 18,688.20 and 8,772.40 is: 13,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444.40 : 18,688.20 = 8,772.40 : x
  2. Step 2: Convert to fraction form
    12,444.40/18,688.20 = 8,772.40/x
  3. Step 3: Cross multiply
    12,444.40x = 18,688.20 × 8,772.40
  4. Step 4: Simplify right side
    12,444.40x = 163,940,365.68
  5. Step 5: Solve for x
    x = 163,940,365.68/12,444.40
  6. Step 6: Final answer
    x = 13,173.83

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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.