Home / 20,528.09-30,764.25-11,639.21

Finding the Fourth Proportional to 20,528.09, 30,764.25 and 11,639.21

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Solution

The fourth proportional to 20,528.09, 30,764.25 and 11,639.21 is: 17,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.09 : 30,764.25 = 11,639.21 : x
  2. Step 2: Convert to fraction form
    20,528.09/30,764.25 = 11,639.21/x
  3. Step 3: Cross multiply
    20,528.09x = 30,764.25 × 11,639.21
  4. Step 4: Simplify right side
    20,528.09x = 358,071,566.24
  5. Step 5: Solve for x
    x = 358,071,566.24/20,528.09
  6. Step 6: Final answer
    x = 17,443.01

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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.