Home / 20,770.08-28,694.07-13,617.06

Finding the Fourth Proportional to 20,770.08, 28,694.07 and 13,617.06

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Solution

The fourth proportional to 20,770.08, 28,694.07 and 13,617.06 is: 18,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.08 : 28,694.07 = 13,617.06 : x
  2. Step 2: Convert to fraction form
    20,770.08/28,694.07 = 13,617.06/x
  3. Step 3: Cross multiply
    20,770.08x = 28,694.07 × 13,617.06
  4. Step 4: Simplify right side
    20,770.08x = 390,728,872.83
  5. Step 5: Solve for x
    x = 390,728,872.83/20,770.08
  6. Step 6: Final answer
    x = 18,812.10

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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.