Home / 20,966.91-28,935.74-11,536.08

Finding the Fourth Proportional to 20,966.91, 28,935.74 and 11,536.08

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Solution

The fourth proportional to 20,966.91, 28,935.74 and 11,536.08 is: 15,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.91 : 28,935.74 = 11,536.08 : x
  2. Step 2: Convert to fraction form
    20,966.91/28,935.74 = 11,536.08/x
  3. Step 3: Cross multiply
    20,966.91x = 28,935.74 × 11,536.08
  4. Step 4: Simplify right side
    20,966.91x = 333,805,011.50
  5. Step 5: Solve for x
    x = 333,805,011.50/20,966.91
  6. Step 6: Final answer
    x = 15,920.56

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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.