Home / 20,353.07-28,096.85-13,643.08

Finding the Fourth Proportional to 20,353.07, 28,096.85 and 13,643.08

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Solution

The fourth proportional to 20,353.07, 28,096.85 and 13,643.08 is: 18,833.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.07 : 28,096.85 = 13,643.08 : x
  2. Step 2: Convert to fraction form
    20,353.07/28,096.85 = 13,643.08/x
  3. Step 3: Cross multiply
    20,353.07x = 28,096.85 × 13,643.08
  4. Step 4: Simplify right side
    20,353.07x = 383,327,433.84
  5. Step 5: Solve for x
    x = 383,327,433.84/20,353.07
  6. Step 6: Final answer
    x = 18,833.89

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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.