Home / 20,688.96-31,014.24-9,435.84

Finding the Fourth Proportional to 20,688.96, 31,014.24 and 9,435.84

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Solution

The fourth proportional to 20,688.96, 31,014.24 and 9,435.84 is: 14,145.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.96 : 31,014.24 = 9,435.84 : x
  2. Step 2: Convert to fraction form
    20,688.96/31,014.24 = 9,435.84/x
  3. Step 3: Cross multiply
    20,688.96x = 31,014.24 × 9,435.84
  4. Step 4: Simplify right side
    20,688.96x = 292,645,406.36
  5. Step 5: Solve for x
    x = 292,645,406.36/20,688.96
  6. Step 6: Final answer
    x = 14,145.00

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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.