Home / 12,313.60-18,444.40-8,155.60

Finding the Fourth Proportional to 12,313.60, 18,444.40 and 8,155.60

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Solution

The fourth proportional to 12,313.60, 18,444.40 and 8,155.60 is: 12,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.60 : 18,444.40 = 8,155.60 : x
  2. Step 2: Convert to fraction form
    12,313.60/18,444.40 = 8,155.60/x
  3. Step 3: Cross multiply
    12,313.60x = 18,444.40 × 8,155.60
  4. Step 4: Simplify right side
    12,313.60x = 150,425,148.64
  5. Step 5: Solve for x
    x = 150,425,148.64/12,313.60
  6. Step 6: Final answer
    x = 12,216.18

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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.