Home / 20,527.71-30,742.70-13,109.19

Finding the Fourth Proportional to 20,527.71, 30,742.70 and 13,109.19

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Solution

The fourth proportional to 20,527.71, 30,742.70 and 13,109.19 is: 19,632.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.71 : 30,742.70 = 13,109.19 : x
  2. Step 2: Convert to fraction form
    20,527.71/30,742.70 = 13,109.19/x
  3. Step 3: Cross multiply
    20,527.71x = 30,742.70 × 13,109.19
  4. Step 4: Simplify right side
    20,527.71x = 403,011,829.87
  5. Step 5: Solve for x
    x = 403,011,829.87/20,527.71
  6. Step 6: Final answer
    x = 19,632.58

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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.