Home / 20,187.16-30,313.68-12,445.18

Finding the Fourth Proportional to 20,187.16, 30,313.68 and 12,445.18

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Solution

The fourth proportional to 20,187.16, 30,313.68 and 12,445.18 is: 18,688.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.16 : 30,313.68 = 12,445.18 : x
  2. Step 2: Convert to fraction form
    20,187.16/30,313.68 = 12,445.18/x
  3. Step 3: Cross multiply
    20,187.16x = 30,313.68 × 12,445.18
  4. Step 4: Simplify right side
    20,187.16x = 377,259,204.06
  5. Step 5: Solve for x
    x = 377,259,204.06/20,187.16
  6. Step 6: Final answer
    x = 18,688.08

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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.