Home / 20,688.21-31,056.62-10,832.13

Finding the Fourth Proportional to 20,688.21, 31,056.62 and 10,832.13

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Solution

The fourth proportional to 20,688.21, 31,056.62 and 10,832.13 is: 16,260.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.21 : 31,056.62 = 10,832.13 : x
  2. Step 2: Convert to fraction form
    20,688.21/31,056.62 = 10,832.13/x
  3. Step 3: Cross multiply
    20,688.21x = 31,056.62 × 10,832.13
  4. Step 4: Simplify right side
    20,688.21x = 336,409,291.04
  5. Step 5: Solve for x
    x = 336,409,291.04/20,688.21
  6. Step 6: Final answer
    x = 16,260.92

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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.