Home / 20,903.42-28,846.07-11,471.74

Finding the Fourth Proportional to 20,903.42, 28,846.07 and 11,471.74

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Solution

The fourth proportional to 20,903.42, 28,846.07 and 11,471.74 is: 15,830.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.42 : 28,846.07 = 11,471.74 : x
  2. Step 2: Convert to fraction form
    20,903.42/28,846.07 = 11,471.74/x
  3. Step 3: Cross multiply
    20,903.42x = 28,846.07 × 11,471.74
  4. Step 4: Simplify right side
    20,903.42x = 330,914,615.06
  5. Step 5: Solve for x
    x = 330,914,615.06/20,903.42
  6. Step 6: Final answer
    x = 15,830.64

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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.