Home / 21,956.27-30,317.12-20,277.07

Finding the Fourth Proportional to 21,956.27, 30,317.12 and 20,277.07

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Solution

The fourth proportional to 21,956.27, 30,317.12 and 20,277.07 is: 27,998.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.27 : 30,317.12 = 20,277.07 : x
  2. Step 2: Convert to fraction form
    21,956.27/30,317.12 = 20,277.07/x
  3. Step 3: Cross multiply
    21,956.27x = 30,317.12 × 20,277.07
  4. Step 4: Simplify right side
    21,956.27x = 614,742,263.55
  5. Step 5: Solve for x
    x = 614,742,263.55/21,956.27
  6. Step 6: Final answer
    x = 27,998.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.