Home / 20,035.12-27,618.96-15,772.51

Finding the Fourth Proportional to 20,035.12, 27,618.96 and 15,772.51

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Solution

The fourth proportional to 20,035.12, 27,618.96 and 15,772.51 is: 21,742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,035.12 : 27,618.96 = 15,772.51 : x
  2. Step 2: Convert to fraction form
    20,035.12/27,618.96 = 15,772.51/x
  3. Step 3: Cross multiply
    20,035.12x = 27,618.96 × 15,772.51
  4. Step 4: Simplify right side
    20,035.12x = 435,620,322.79
  5. Step 5: Solve for x
    x = 435,620,322.79/20,035.12
  6. Step 6: Final answer
    x = 21,742.84

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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.