Home / 20,827.68-28,742.63-11,396.31

Finding the Fourth Proportional to 20,827.68, 28,742.63 and 11,396.31

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Solution

The fourth proportional to 20,827.68, 28,742.63 and 11,396.31 is: 15,727.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.68 : 28,742.63 = 11,396.31 : x
  2. Step 2: Convert to fraction form
    20,827.68/28,742.63 = 11,396.31/x
  3. Step 3: Cross multiply
    20,827.68x = 28,742.63 × 11,396.31
  4. Step 4: Simplify right side
    20,827.68x = 327,559,864.71
  5. Step 5: Solve for x
    x = 327,559,864.71/20,827.68
  6. Step 6: Final answer
    x = 15,727.14

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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.