Home / 13,724.42-20,571.80-6,688.91

Finding the Fourth Proportional to 13,724.42, 20,571.80 and 6,688.91

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Solution

The fourth proportional to 13,724.42, 20,571.80 and 6,688.91 is: 10,026.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.42 : 20,571.80 = 6,688.91 : x
  2. Step 2: Convert to fraction form
    13,724.42/20,571.80 = 6,688.91/x
  3. Step 3: Cross multiply
    13,724.42x = 20,571.80 × 6,688.91
  4. Step 4: Simplify right side
    13,724.42x = 137,602,936.72
  5. Step 5: Solve for x
    x = 137,602,936.72/13,724.42
  6. Step 6: Final answer
    x = 10,026.14

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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.