Home / 13,800.32-20,688.96-5,475.16

Finding the Fourth Proportional to 13,800.32, 20,688.96 and 5,475.16

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Solution

The fourth proportional to 13,800.32, 20,688.96 and 5,475.16 is: 8,208.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.32 : 20,688.96 = 5,475.16 : x
  2. Step 2: Convert to fraction form
    13,800.32/20,688.96 = 5,475.16/x
  3. Step 3: Cross multiply
    13,800.32x = 20,688.96 × 5,475.16
  4. Step 4: Simplify right side
    13,800.32x = 113,275,366.23
  5. Step 5: Solve for x
    x = 113,275,366.23/13,800.32
  6. Step 6: Final answer
    x = 8,208.17

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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.