Home / 21,055.71-31,527.64-12,724.46

Finding the Fourth Proportional to 21,055.71, 31,527.64 and 12,724.46

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Solution

The fourth proportional to 21,055.71, 31,527.64 and 12,724.46 is: 19,052.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.71 : 31,527.64 = 12,724.46 : x
  2. Step 2: Convert to fraction form
    21,055.71/31,527.64 = 12,724.46/x
  3. Step 3: Cross multiply
    21,055.71x = 31,527.64 × 12,724.46
  4. Step 4: Simplify right side
    21,055.71x = 401,171,972.81
  5. Step 5: Solve for x
    x = 401,171,972.81/21,055.71
  6. Step 6: Final answer
    x = 19,052.88

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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.